Castle's First Reef Tank 20 Gallon Cube

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Castle136

Castle136

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**7 July Update**

Been letting the tank cycle a bit, I say cycle but thanks to TBS live rock and live sand, it’s really just me letting the die-off and increased phosphates come down.

I’ve re-done the aquascape (pics to come) and also added a refugium. Since I’m not using the Ref Sea AIO protein skimmer (just preference in my nutrient export plan, mentor input, and tank im trying to “recreate” as my first ever saltwater reef tank), the water level in my back sump was all kinda of out of wack. After much tinkering to trying to have the same flow as WWC demonstrates in their flow video - but failing to recreate a suitable case in my tank - I stopped trying to force a square peg through a round hole and just raised the water level to almost near the top of the tank. The sound of water trickling was the issue with having flow be right but level so low it sounded like the Fontana Della Barcaccia during a monsoon was my biggest issue. As a result, the flow in the back of my sump isn’t great. However, I’m adjusting because now that will be my known detritus collection point and I’ll be vacuuming out the back more frequently to compensate for the lack of flow through the sump. Also as a result, and to increase long-term nutrient export stability, I got some chaeto and added it to the back of my sump where the skimmer would go and a tunze fuge light. Very happy with the setup thus far and seeing an increased stability in my pH level the last week as a result. Got some good pods and a bristle star from the awesome local reefer who gave me some excess chaeto!

So the current “problems,” and I know these are very small compared to whatever lies ahead, are the die off leading to elevated phosphates, thus keeping my lights off and no coral going in, and two unfriendly hitchhikers from the live rock that have eluded me (a gorilla crab and Florida stone crab - they vex me as every time I try to capture them they scurry under the rock and elude me once more; and so I persist. But no injuries or deaths of cuc that I’ve seen so not too bad).

My phosphates have been as high as 0.3. After getting this measure I did a 75% w/c and got them down to 0.11. I’ve gone to 5 gallon w/c every 3 days the last week and saw levels go from 0.11 to 0.2 to 0.26 as of Saturday 5 July. So die off is still there from the live rock but seems to be slowing down. My nitrates are sitting happy at 3ppm the last week after my w/c (only rising from 1ppm after my 75% w/c). Light has remained off to date since getting the tank wet on 17 June.

My current tank inhabitants are
- 2 snowflake clowns (of which I’m looking to sell one because in my naivety and inexperience in this hobby I bought a pair thinking I’d be good but realized from my mentor that future aggression would severely limit my future desired stock list. Have yet to be able to find a home yet),
- Yellow watchmen goby (waiting to add the pistol shrimp until I don’t have the elevated PO4 that may require another massive w/c)
- Cuc of 5 blue leg hermits, a bunch of snails I can’t ID that came with the rock, and pods/brittle star that came with the chaeto.

Excited to see everything living and moving this far in the tank and very excited and loving the hobby!
 
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**8 July Update**

Got back from a mini beach vacation and snapped a few pics tongith with just my cell phone flashlight. Mostly cause I have not perfected my reef tank photo taking abilities yet and in simplest terms, my wife and I thought it looked really cool lit up at night from overhead.

Also pics of the fuge light going on in the back. Didn't realize the Red Sea Max Nano back wall between the sump and DT was only partially opaque, but it worked out well when I got the tunze fuge light at the bottom pointed up and away. There isn't a whole lot of light spillage into the DT and there are no signs (thus far fingers crossed) of algae in the DT growing. The chaeto appears to already be growing around the back which is awesome to see. Admittedly I am just constantly geeking out about seeing the whole environment in my tanks grow and expand.

Plan on a 5 gallon w/c tomorrow and to see where my levels are sitting. Hopefully not as high as it has been for phosphates so I can start turning on my DT lights. Hope you enjoy the night time pics as much as my wife and I!

Also big update on the not reef friendly hitchhikers guide to my aquarium: I finally saw an opportunity and got the Florida Stone Crab out of the tank, crushed it and fed it. So now it's just down to the gorilla crab lurking in the shadows.
 

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**10 August Update**

Finally got the lights on! Phosphates are still testing high at above .1 and trying to get it down. Nitrates are still testing steady at 1ppm. Introduced some pods on 6 August in prep to start turning lights on to try and control algae growth.

Going to ramp up from 5% on the lights to eventual 70% as the end goal.

Picture below! Excited to see it finally under the lights!
 

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**18 SEP Update**

Wow it's been a while since an update, got very busy.

Finally ramping up the lights and have (fingers crossed) not had an algae bloom. Almost to the WWC target for Leah's 20 that I'm using. Huge shout out to @WWC for the awesome info, lighting schedule, and now my first few coral/possum wrasse I have going through QT right now (and shout out to Serious Reefs for the SRQT model)! My brother-in-law got me the first few coral and I'm digging watching them come out.

Also added a firefish to the mix about a month ago and have my pistol shrimp in with the YWG (who have been wreaking havoc on the sand bed as per usual haha! But it's super cool to see how they immediately formed a pair and have been turning over the sand bed. The porcelain crab (which turned out to be two porcelain crabs from the live rock) has gotten big (And again huge shout out to @LiverockRocks for the great setup that has kicked off my tank. Loving the color and mix of inverts now in the tank. Picked up some pods about a month and a half ago from Algae barn and added a torchus snail and another nassarius snail from my LFS.

Caveat for all of the above for whoever reads this. All of the above changes I have done over the last two months. Slow additions with a few inverts here and there. One fish at a time after my initial three. Monitoring my nutrient levels (still working on PO4). Waiting for about a month and the right PAR levels to add the coral (once again thank you to Serious Reefs for the PAR to watts calculations so I knew when I was at least at 50 PAR before adding). And a very slow ramp up of my lights and watching for algae to ensure I don’t get a bloom and need to shut down. As everyone on R2R and those pros in the hobby recommend, it takes time. Can’t rush it and I have done my best (with the advice of my mentor) to ensure I only adjust or add one thing at a time and then watch how the tank reacts so I can do the best to prevent a crash and care for the animals the best I can.

Until next time. Cheers.
Castle 136
 

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bangcamaro

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**18 SEP Update**

Wow it's been a while since an update, got very busy.

Finally ramping up the lights and have (fingers crossed) not had an algae bloom. Almost to the WWC target for Leah's 20 that I'm using. Huge shout out to @WWC for the awesome info, lighting schedule, and now my first few coral/possum wrasse I have going through QT right now (and shout out to Serious Reefs for the SRQT model)! My brother-in-law got me the first few coral and I'm digging watching them come out.

Also added a firefish to the mix about a month ago and have my pistol shrimp in with the YWG (who have been wreaking havoc on the sand bed as per usual haha! But it's super cool to see how they immediately formed a pair and have been turning over the sand bed. The porcelain crab (which turned out to be two porcelain crabs from the live rock) has gotten big (And again huge shout out to @LiverockRocks for the great setup that has kicked off my tank. Loving the color and mix of inverts now in the tank. Picked up some pods about a month and a half ago from Algae barn and added a torchus snail and another nassarius snail from my LFS.

Caveat for all of the above for whoever reads this. All of the above changes I have done over the last two months. Slow additions with a few inverts here and there. One fish at a time after my initial three. Monitoring my nutrient levels (still working on PO4). Waiting for about a month and the right PAR levels to add the coral (once again thank you to Serious Reefs for the PAR to watts calculations so I knew when I was at least at 50 PAR before adding). And a very slow ramp up of my lights and watching for algae to ensure I don’t get a bloom and need to shut down. As everyone on R2R and those pros in the hobby recommend, it takes time. Can’t rush it and I have done my best (with the advice of my mentor) to ensure I only adjust or add one thing at a time and then watch how the tank reacts so I can do the best to prevent a crash and care for the animals the best I can.

Until next time. Cheers.
Castle 136
ok i absolutely LOVE your sandbed and how natural it looks. this is amazing!! Cannot wait to see things growing for you!
 

JohnNYC8

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**18 SEP Update**

Wow it's been a while since an update, got very busy.

Finally ramping up the lights and have (fingers crossed) not had an algae bloom. Almost to the WWC target for Leah's 20 that I'm using. Huge shout out to @WWC for the awesome info, lighting schedule, and now my first few coral/possum wrasse I have going through QT right now (and shout out to Serious Reefs for the SRQT model)! My brother-in-law got me the first few coral and I'm digging watching them come out.

Also added a firefish to the mix about a month ago and have my pistol shrimp in with the YWG (who have been wreaking havoc on the sand bed as per usual haha! But it's super cool to see how they immediately formed a pair and have been turning over the sand bed. The porcelain crab (which turned out to be two porcelain crabs from the live rock) has gotten big (And again huge shout out to @LiverockRocks for the great setup that has kicked off my tank. Loving the color and mix of inverts now in the tank. Picked up some pods about a month and a half ago from Algae barn and added a torchus snail and another nassarius snail from my LFS.

Caveat for all of the above for whoever reads this. All of the above changes I have done over the last two months. Slow additions with a few inverts here and there. One fish at a time after my initial three. Monitoring my nutrient levels (still working on PO4). Waiting for about a month and the right PAR levels to add the coral (once again thank you to Serious Reefs for the PAR to watts calculations so I knew when I was at least at 50 PAR before adding). And a very slow ramp up of my lights and watching for algae to ensure I don’t get a bloom and need to shut down. As everyone on R2R and those pros in the hobby recommend, it takes time. Can’t rush it and I have done my best (with the advice of my mentor) to ensure I only adjust or add one thing at a time and then watch how the tank reacts so I can do the best to prevent a crash and care for the animals the best I can.

Until next time. Cheers.
Castle 136
Tank looks awesome. AOI are my favorite Zoas and the candy cane will look great filling out that spot. You can’t go wrong with the WWC method. It’s working great.
 
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Tank looks awesome. AOI are my favorite Zoas and the candy cane will look great filling out that spot. You can’t go wrong with the WWC method. It’s working great.
100%! It was my top spot zoa want when I was building that out. Super excited to see them fill out the space.
 
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ok i absolutely LOVE your sandbed and how natural it looks. this is amazing!! Cannot wait to see things growing for you!
Thank you! I'm a huge fan of the TBS live sand, for not only the look but of course all the huge positive benefits for the microbiome of the tank.
 

X-37B

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Already purchased! Super excited!
Looking forward to seeing this grow.
Here is my 15 3 months from the last pic and now 6 months old for some inspiration.
20250908_141944.jpg
 

LiverockRocks

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**18 SEP Update**

Wow it's been a while since an update, got very busy.

Finally ramping up the lights and have (fingers crossed) not had an algae bloom. Almost to the WWC target for Leah's 20 that I'm using. Huge shout out to @WWC for the awesome info, lighting schedule, and now my first few coral/possum wrasse I have going through QT right now (and shout out to Serious Reefs for the SRQT model)! My brother-in-law got me the first few coral and I'm digging watching them come out.

Also added a firefish to the mix about a month ago and have my pistol shrimp in with the YWG (who have been wreaking havoc on the sand bed as per usual haha! But it's super cool to see how they immediately formed a pair and have been turning over the sand bed. The porcelain crab (which turned out to be two porcelain crabs from the live rock) has gotten big (And again huge shout out to @LiverockRocks for the great setup that has kicked off my tank. Loving the color and mix of inverts now in the tank. Picked up some pods about a month and a half ago from Algae barn and added a torchus snail and another nassarius snail from my LFS.

Caveat for all of the above for whoever reads this. All of the above changes I have done over the last two months. Slow additions with a few inverts here and there. One fish at a time after my initial three. Monitoring my nutrient levels (still working on PO4). Waiting for about a month and the right PAR levels to add the coral (once again thank you to Serious Reefs for the PAR to watts calculations so I knew when I was at least at 50 PAR before adding). And a very slow ramp up of my lights and watching for algae to ensure I don’t get a bloom and need to shut down. As everyone on R2R and those pros in the hobby recommend, it takes time. Can’t rush it and I have done my best (with the advice of my mentor) to ensure I only adjust or add one thing at a time and then watch how the tank reacts so I can do the best to prevent a crash and care for the animals the best I can.

Until next time. Cheers.
Castle 136
Your tank is looking great! Slow and steady is the way to go.
Great to hear the porcelains are doing well, super fun reef safe crabs!
 
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Looking really good. Taking your time is the hardest part of hobby so you are already ahead of most lol.
Thank you! Haha yeah it’s been a test of will to not speed up or rush things. Luckily great advice and people far smarter than me on here and in the community were huge to preventing that.
 
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**28 SEP Update**

Well, let the torch and the hammer acclimate on the bottom for a few days to get acclimated and after seeing them doing well and opening up really nice I moved them to their spots in the tank! Very happy with how it's all coming together now.
 

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**20 October 2025 Update**

Got one of the Gold Torches from WWC into the tank this weekend...and then had the flash sale soooo, will be getting a few more pieces in this week haha!

Really happy with how it's coming together! The possum wrasse is in and I'm not at my stocking number for animal life and am now just on a mission to stock coral. Dealing with a small bit of GHA in select areas due to a spike in phosphates from bad source water due to salt (it was clearly just old and had been on the shelf for a long time) but luckily have been able to handle it and got new salt. Started dosing the AFR now which has been holding my alk between 8.4 and 85. so seems to be matching uptake as it stands now. Overall, everything seems to be happy and fully extended (minus the one zoa I need to redo a H2O2 dip on to get rid of the GHA growing on the frag).

Can't wait to get the new frags in this week!
 

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**25 October 2025 Update**

Got the new frags in from the @WWC Fragtoberfest sale! Got the Goni and Blasto and then jumped on the chance to get the Florida Clove. Not in the sale but totally fine with it cause I've been waiting to be able to get that one for a while. Thank you Kieth for all the help!

Super happy with how the tank is coming together. Loving the movement from the torches and the goni! And was stoked to get the red in from the blasto to add some contrast to the greens and blues! Still trying to get the golden suns zoa frag to open back up. Done two dips of increasing from 3-1 hydrogen peroxide to a 1-1 part yesterday to kill off the GHA. Now to start watching it all grow out. Keep getting my parameters stable to build to some acros!
 

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