UNS R120 First Reef Tank Build

mjk42

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Hello everyone!

I wanted to start a build thread about my first reef tank set up. I have done fresh water planted tanks before but always wanted to make the jump to a reef tank. Life got in the way for a number of years but now is the time! Knowing full well that there would be a huge learning curve I wanted to focus on a starting path that would hopefully smooth out some of those challenges. Budget was healthy so had the option to incorporate a controller to try to make some of my day to day operations easier as well. I started re-watching BRS videos and reading the forums and guides here and have appreciated the input others have provided thus far.

Overall goal
LPS and eventually some SPS. Small tangs, a flame angle (rolling the dice), file fish and more TBD

Mixing station
While still deciding on the tank set up, I decided to build my salt water mixing station. I got a BRS RODI system and set up with 2 30gallon brute trash cans in the garage. Kept it simple with the plumbing with just a uniseal with hose and valve valve on each. Set up with a simple pump and hose to pump my RODI water from one can to the second for mixing with another flow pump in the salt water can and heater. Nothing fancy but works fine! Using Red Sea blue bucket mixed to 35ppm/1.026 SG.
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Tank
For the tank, I decided on the UNS R120 system for my first set up. I was also between waterbox and IM but the UNS systems sump set up and stand seemed better for me. I loved that there was a separate area for the electronics stuff as my wife give me strict limits on no stuff outside of the stand 😬 . Its 4x2x2 feet with 94gallon display. My total water volume is about 112 gallons at this point.

I purchased from Top Shelf Aquatics and everything went smoothly from beginning to end with shipping and delivery. Got it moved into place in the living room on an interior load bearing wall. Steel beam running perpendicular to tank in basement so feel pretty good that if the beam can hold up my house it can carry a few extra pounds...
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Rock/Sand
Was inspired by the BRS videos of NSA scapes and gave it a shot. We used Marco rock from BRS and spent about a week making the scape. Once I got it in the tank I realized it was too high and had to modify a bit but think it came out pretty good overall. Using carib sea special grade 60lbs of sand. After some debate and a lot of reading I also decided to incorporate 20lbs of live sand from TBS and 15lbs of base rock into the sump to increase biodiversity and maybe smooth out the future ugly stages! Very happy with the live sand and rock addition! The sand mix looks great and we got a tiny brave soul of a hermit crab as our first inhabitant... The base rock has some great Coraline algae and some cool feather dusters and barnacles as well. Got the tank filled on 11/7 and used some Fritz turbo start prior to adding the live sand and rocks on 11/13. Negative ammonia and 0.8ppm nitrogen today.
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Lights
Initially was planning for Radion XR 30s but glad I learned more about Reefi first. I went with 2 Reefi Uno 2.1 Pro with mounting brackets. I love the look and was super impressed by how quick Daniel responded to all my questions as I tried to figure out what to get and how to set up. Just fired them up for the first time and set up was a bit odd to synch with wifi but overall not bad and they look great with pre-built program options (I would have no clue what or how to adjust anyway!) I plan to keep lights off for awhile longer though as I figure out the rest of my startup plan.
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Other Gear:
Wanted to stay with one brand to make communication with the Hydros system easier and am using Reef Octopus. Again purchased most of my stuff from Top Shelf Aquatics who have been awesome to work with (thanks Frank!).

Return Pump- Reef octopus VarioS8. Definitely more then I need but I am running at 40% with good flow and prior advice was to get more pump then needed to run a lower power/cooler control board. I had it cranked up to 70% and the overflow could handle it just fine but it was basically white water rapids coming out of the outflow jets....

Power Heads- Octopulse 4 x2 (not turned on)

Mechanical filtration- UNS filter socks x3. Not really a good option for a roller system in this sump as the red sea 500 doesn't fit in the filter sock chamber. Could maybe do the Klir x2 but will see how lazy I get. Not sure it would be worth it.

Skimmer- Reef Octopus Elite 150 Int (rated for display of 100 gallons with heavy bioload and my display will be about 90 gallons). Breaking in now but not much nutrients to take out. Will eventually use BRS CO2 Scrubber attached

Reactor- BRS carbon reactor for skimmer chamber. Fits in perfectly. (Not turned on)
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Heater- IM Helio 700 Watt (350 x 2) iin skimmer chamber. Set to 78 and temp hasn't moved in a week.

UV- Plumbed for 25w Aqua UV off of return pump manifold that was factory built into UNS plumbing. Hydros flow meter installed on outflow from UV and running at 150 GPH targeting high UV dose for Marine Ich. BRS recommended flow of ~400GPH but from what I can find here this is a very controversial debate and that the contact time for Marine Ich needs to be higher (slower flow and longer UV zap if I understand correctly) and its seems like flows for the 25watt in prior discussion would be in the 120GPH range. No plans to turn UV light on until fish are added later.

Refugium- built into sump. UNS refugium light (not turned on)

Controller- Hydros set up. I will make a separate post about this once I get untangled from all the cords....

Next steps
- finish setting up Hydros system. Fluid sensors, pH probe, leak detector
- setting up ATO system (the gravity system as part of the UNS tank/kit seems a little iffy with the float switch being really touchy so far). Decided at this point to use the Hydros ATO pump and sensor and will probably move the ATO container to the other side of the wall (into garage) where I installed a cord pass through prior to setting up tank.
- planning out next steps for the ugly phase. I want to add copopods maybe next week? Pair of starter clown fish after? When do I start turning lights on?? First corals??
- set up BRS 2 part + mag once I actually have something that will need it.
- order Kraken lid

Any advice is much appreciated and thanks for having a look!!
 
Very nice! Anxiously awaiting your Hydros write-up! 🐟 Congrats! Following along …..
 
Looking great! Following along! About to splash my UNS R150 Shallow this weekend, after being out of the hobby for over a decade lol so trying to shake off some rust.. lol will be following along with you!!
 
Did you test fit the RedSea 500? I believe we tested fitting it in one of the R120s a while back, and it fit into the filter sock chamber.

The Float switch makes a nice redundancy when using another ATO, so long as it is using standard RODI tubing.

Scape looks sick by the way! Love an NSA done right. Can't wait to see some updates!
 
Following along!
 
Looking great! Following along! About to splash my UNS R150 Shallow this weekend, after being out of the hobby for over a decade lol so trying to shake off some rust.. lol will be following along with you!!
Awesome!! Excited to see it!
 
Did you test fit the RedSea 500? I believe we tested fitting it in one of the R120s a while back, and it fit into the filter sock chamber.

The Float switch makes a nice redundancy when using another ATO, so long as it is using standard RODI tubing.

Scape looks sick by the way! Love an NSA done right. Can't wait to see some updates!
I didn't test the RedSea 500 I just looked at the measurements that I could find. It looks like it is 8in wide and the filter socks area is about 7.5in that I measured. It could fit in the skimmer chamber but then it would be a tight fit with the skimmer and I would have to redo some type of plumbing to come over to the filter roller intake.

Appreciate you having a look!

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This week I spent continuing to work on the Hydros set up. Created collective and set up ATO system which was a bit of a challenge. Working out the last few details of that now. Reefi lights are set up and on a "ramp up program for the next 60 days so I don't have to think about much there. The few tiny brave soul crabs that hitchhiked with the live sand are making the rounds in the display. I have the refugium light set up now to run a few hours at night just the keep the live rock happy. There are some white/clear "tubes?" growing from the rock. Best I can find they are some type of sponge or maybe worm? There are a few feather dusters still going strong.
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Today was the first full chemistry day with Hanna checkers. Tank now 2 weeks old.
Salinity- 1.026/35ppt
pH- set up Hydros pH prob and its 8.00 this evening. No CO2 scrubber hooked up yet
dKH- 7.0 (surprised it was this low). Red sea blue bucket mixed to what should be KH of 8.0
Ca- 411
Mg- 1440
NH3- negative for 2nd week. No plans to check further
Nitrate- up to 2.2
Phos- 0.08 (higher then I expected)

Next weekend plan will be first H2O change, add copopods with small dose of phyto (purchased from Eldredge at reefplantation.com who was super helpful!) and add first fish with pair of ocellaris clownfish. I have no problem watching an empty tank full of rocks but my kids need something more exciting to look at besides the worlds smallest hermit crab haha.

Will hopefully have the Hydros update ready soon too!
 
The tubes are definitely sponge. Looks like you’re off to a great start. Congrats on your first saltwater tank!
 
Making more progress this week. Did first water change with 10% and seem to have the ATO tuned in.

The ugly stage has started with a light coating of diatoms on the rocks and a little on the sand.

Lights are on but still of low power.

Made the first addition of copepods from Eldredge at reefplantation.com and started a small dose of phyto as well. Will likely add another round of pods in 2-3 weeks.

Ordered a Kraken lid from Black Friday sale and am excited for that to come as well.

Most exciting, we added or first fish! Drove 2hrs to our favorite fish store and added two standard ocellaris clownfish (first time ever the kids liked the cheap standard variety of something vs the designer more expensive models hahah) as well as a small ORA Filefish. The filefish is already hard at work picking at the rocks nonstop. Also started a very small clean up crew with 3 red tip hermit crabs, 3 yellow tip hermit crabs, 4 astraea snails (already eating the diatoms!) and 2 cerith snails. No plans to add any more fish or CUC for 1 month.

Tests today
salinity down slightly to 1.025 and 34 ppt
Nitrate- 2.3
Phos- 0.01
dKH- 7.1
pH is ~8
 

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Hydros Update- LONG POST

It has taken awhile but I have the Hydros system set up and running well at this point. I built in expansion for the future and alot of redundancy to try to give me the best shot at success and a dry floor. A major tank flood that could be prevented would not bode well for my future ambitions!

I purchased equipment through Top Shelf with the help of Frank who works there and again they have been great to deal with.

I set up the system as a "collective" and found the directions on the Hydros website pretty good for this.

XP8- Master device of the collective with power monitoring of the AC outlets. Power supply from home outlet
1- Right Light
2- Left Light (both set to "always on" with the light schedule controlled separately through the Reefi control app)
3- return pump
4- refugium light (on/off controlled with Hydros. Intensity and spectrum controlled by UNS light switch)
5- carbon reactor (off currently, no need for carbon at this point)
6- UV (set to turn off during water change, return pump off or low flow from UV flow sensor)
7- not used
8- not used

Launch- 4 AC outlets without power monitoring. 4 sense ports, 0-10v control and 4 drive ports, pH/ORP and salinity probe options Power supply from home outlet
AC Outlet 1- Heater. I am using the IM Helios to do the regular adjustments with Hydros as backup with slightly higher (will turn outlet off) and lower temp threshold (will send me high alert). I did not use a XP8 outlet because power monitoring isn't helpful for this with the on/off separate with the primary Helios. I also wanted to the power control and temp monitoring to be on the same Hydros device to eliminate a potential fail point

Sense 1- Temp sump. Probe is directly next to the Helios probe and they give identical readings with minimal if any variation.

Sense 2- Sump water level. "Triple fluid sensor" that has Dry-Wet-Overflow sensors that is the primary fluid control for my ATO. Overflow sensor sends a high alert and inhibits ATO pump.

Sense 3- Skimmer cup. When wet will turn off skimmer

Sense 4- UV flow. I have my UV set to 150gph with 25watt targeted to high UV dose for Marine ich. With low flow rate will not really have any effect for algae. If flow is low, will turn off UV power

Drive port- ATO pump. Very small pump that came with the Hydros ATO kit which seems like it works great. The ATO took some time to get set up but it now flows into the return pump chamber through the back wall from my garage on the other side. I built in a triple reduce to prevent a fail on with pump set to turn off from sump sensor when it hits wet/overflow, a max on time on the pump of 1 min and a separate "high sump" fluid sensor above the regular ATO sensor that will send a high alert and turn pump off.

Probe 1- pH probe. calibration and setup was very easy. I don't have ORP with no plans to run ozone at this time and didn't get the salinity probe because from what I read they salinity probes in general can have some accuracy issues. I taught the kids to do daily salinity checks with the Milwaukee salinty checker which is supper easy to use and I haven't had any significant variations with S.G. 1.025-1.026 and 34-35ppt

Control XS- 4 more sense ports. Power provided from the command bus cable
1- Temp display. Probe in the tank overflow as backup

2- Sump high- high alert if wet and turns off ATO

3- Sump low- fluid sensor placed below my ATO sensor and high alert if dry and turns off return pump, skimmer and UV

4- Leak sensor- rope style leak sensor wrapped around bottom of tank and behind tank near UV flow pipes. High alert if wet

Wave- 4 direct pump control ports to set programs and eliminate need for pump separate power supply/power bricks for lower power pumps. 0-10V control for higher power pumps
1- Left Octopulse 4 (pumps are synced with opposite side/back forth wave maker programs. Hydros has multiple programs to pick from for SPS, LPS, gyre, random etc)

2- Right Octopulse 4

3- Skimmer pump (Varios 2). Direct power control and tunned to 70% pump power currently.

4- not used

0-10V- controls return pump power. Tuned to 40% power

Blenny- 4 dosing pumps and 4 sense ports.
Sense 1- Fluid sensor to alert "dry" Ca container level
Sense 2- Fluid sensor to alert "dry" Alk container level
Sense 3- Fluid sensor to alert "dry" Mg container level
Sense 4- Fluid sensor to alert "dry" ATO container level

Pump 1- Ca dosing
Pump 2- Alk dosing
Pump 3- Mg dosing

The UNS systems has an excellent cord management and electronics compartment that made cord management a lot easier. Lots of 3M Velcro for power bricks and controllers and velcro cord keepers and 3M light clips to keep cords all separate. Lastly, a label maker to mark all the plugs and cords was helpful.


------
Mini tank update for this week.
The diatoms are gone?!? Combination of pods and the mini clean up crew seems to certainly have change something for the better. Bumped up the light intensity to 50% now with will take 30 days to get up to full power for LPS mode on the Reefi app. The clown fish pair and file fish are doing great! No new additions planned until the weekend after Christmas and then may also start some small level Ca/Alk dosing as necessary with plan for a first few corals after that.
 

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Tank Update:
The ugly phase is progressing and rocks now have a more consistent coat of brown algae. Hair algae is starting as well is some small patches on the rocks and the back of glass. The snails have been doing pretty good but its now outpacing them. I have been slowly increasing light intensity and just dialed it back a bit to try to give the algae some less fuel while hopefully the snails and hermit crabs keep eating away.

I also started the refugium last week to hopefully out-compete some of the nuisance algae as I had consistent Nitrate and phospate levels. Got the chaeto from algae barn with more pods as well.

Chemistry today surprised me and I am down to 0.0 Nitrate and 0.0 phosphates from 2.6 and 0.04 last week. Not ideal and Im assuming the nuisance algae is sucking up what the tank is producing as the refugium has only been going for a few days. Will maybe do a midweek Nitrate and phos check to see if it starts to come back up. Not sure what else to do for this?

Alk has consistently been low despite salt mix saying it should be 8 I have have not seen dKH above 7. I started small level dosing of BRS soda ash of the past week it is is up slightly now to 7.3 from 6.9. I don't need to bring up fast at this point without corals still.

Lastly the fish. The clowns are doing great and have turned quit social coming up to ask for food when they see anyone. Unfortunately the file fish was so small that it went into the return chamber and flushed through the filter mat ☹️ Lesson learned not to buy suck small fish.

I have a royal gramma and a long nose hawkfish ordered from my LFS. With the increased algae I also think I need to add either a tang or the foxface to help out before so the algae doesn't get out of control...
 
Have made some new additions to the tank in the past week with a turbo snail, emerald crab, 2 peppermint shrimp, a fire cleaner shrimp and finally a firefish goby and a one spot foxface. The new additions have pretty much eliminated the hair algae with the foxface constantly picking the rocks and back wall. The real hero for the algae though is the emerald crab who literally in one day cleaned off an entire rock stack from hair algae on his own!

Updated chemistry checks today
Salinity- 1.026/34ppt

pH- 8.2 with dosing alkalinity and pulling skimmer intake air from my garage. I have not put CO2 scrubber media in and doesn't seem like a I need to at this point

dKH- 7.6. I have been dosing alkalinity slowly but have definitely needed to increase the amount with goal to get it up to 9.0. It seems like the crabs/snails and the few spots of coralline algae forming are using more then I anticipated!

Ca- dropped to 396 from 471 3 weeks ago. No dosing yet
Mg- dropped to 1310 from 1490 3 weeks ago. No dosing

Nitrate- 0.0 again... I dosed first round of brightwell Neo-nitrate today. Feeding more as well
Phos- 0.01. Dosed first round of Neo-phos today.

The refugium cheato is pretty much dead at this point and now with the low nitrate Im going to wait until trying that again.

The sponges, feather dusters and a mystery crab from the TBS live rock in the sump are still doing well and I am dosing phyto daily as well for those and the pods.

Next steps:
1) getting a PAR meter to finalize the program and intensity of the lights. I am using the Reefi default LPS settings but don't know how high the intensity needs to be yet (100% of the program? 75%?). Figured best to measure and know then kill a bunch of future corals
2) Still waiting for the Royal gramma and the long nose hawkfish to get to my LFS. Not sure what fish to go after that.
3) Add corals! I want to get the lights set and the alkalinity stable up to 9 and then figure its time to test out some corals. Not decided yet but I like LPS the best so will probably get a hammer, favia, candy cane and blasto or micromussa to start things out.

Any suggestions welcome!
 

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Over the past few weeks we added two new fish with a diamond goby (Vincent) and a lawnmower blenny (Bob). They are both hard at work! I set up the light spectrum and adjusted the program in anticipation of adding corals this week! I used a PAR meter to map things out and have ~250-300 at the peaks of of the rocks and ~750-125 at the sandbed with some areas of much lower in the shaded areas.

I have been dosing nitrate and phos to prevent dinos and this seems to have worked. I was starting to get some brown fuzzy stuff when I was at 0.0 nitrate and phos for a few weeks and since dosing slowly I have the nitrate up to 8 and phos at 0.06. Brown stuff is gone and really now other algae issues to speak of. Very fine green on some of the rocks and have consistent and expanding coralline algae.

I have needed to consistently dose calcium and alk (BRS soda ash) with rising doses that I am assuming is related to the CUC growing (snails are getting bigger and cool to see the new parts of the shell growing!) and the coralline algae.

I have a shipment of coral set to arrive from Top Shelf Aquatics this Friday and it will officially be a reef tank! Will do a post about all the coal in the future 😬

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Tanks looking good man, nice progress. Im about to pull the trigger on this same tank, will actually be downsizing a bit from my waterbox frag 175, I like the dimensions and volume on this tank, think its better for me for my first large reef tank, and the sump is undeniable. my only concern with the sump is space. I have a tunze 9410 skimmer, Icecap media reactor (medium), and want to do a refugium. I also plan to use a UV, looks like they come with the manifold so that's easy peasy. I hope that's all I would need. I also have a Red Sea 250 roller mat, will have to do more research to see if I can use that in the sock chamber.
 
Tank is 4 months old now and making good progress!

Seem to have passed through eh "ugly stage" fairly easily and have been adding more livestock and corals. Have some faint algae on the back wall of the tank that is very hard to scrub off but it is not expanding and provides a snack for the snails and fish.

Current fish included 2 ocellaris clownfish, fire fish, one spot fox face, lawnmower blenny, diamond goby, tomini tang and flame angle. Everyone is getting along great with no noted aggression. The tomini tang is a gorgeous fish with the orange fin tips and white tail and the flame angle (2nd to a yellow tang) was the fish that sparked my interest in saltwater to begin with. Still planning to add a few more fish with a long nose hawkfish, royal gramma and yellow coris or melanurus wrasse in the future.

We have added two rounds of coral! The first round was from Top Shelf and was 6 acropora, one birds nest, 1 monte digitata, one monte cap, candy cane, 2 acans, 2 favia, 1 blasto and one hammer coral. One acropora seemed to have a hard time from the start and has slowly been bleaching from the bottom up. The other 5 seem to be doing well with some very small growth thus far. The monte cap is definitely growing and the others seem to be doing well also.

The 2nd round of coral was from TRSC Aquatics and was a hellfire torch, joker torch, hammer garden, Duncan coral, 2 favia and one acro. They were added last week and the quality of the corals was amazing with nice size frags and what seemed like very good prices. I love the torches and think I will be adding more of those for sure!

I have learned a hard lesson that hammers corals must be very tasty because I caught the emerald crab in action eating the first one! He was sentenced to sump jail followed by a hermit crab with the same taste apparently. A second hammer was then eaten by a yet unidentified (peppermint shrimp?) bandit but the other corals have been undisturbed.... Makes me anxious... I have increased feeding to ensure more scraps fall to the bottom encase they are hungry.

Nitrates running ~5-7 and phos ~0.03 and I have been dosing both occasionally to keep the levels up. Having dosing now pretty stable for alk with dKH 9.0 dosing 110ml BRS soda ash per day. Calcium has been more labile and have been uptriting my dosing for this as well.

Lastly, I have a surprise hitchhiker from the TBS sand. There is a Florida mantis shrimp running about! Still trying to figure out a way to get him as he is pretty small and VERY fast. Will probably try the bottle trap but I'm pretty sure this will catch my other peppermint shrimp too. Maybe the long awaited long nose hawkfish will take care of the problem for me... 🫣
 

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Glad to hear your passed the ugly stages! Nice choice of corals. Really excited to see them start to grow in. Great job.
 

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