hob

2/7/2026 FTS: Been kinda just stuck at this point without much more room for quite a while. Just waiting for enough motivation to get a bigger tank to strike, I guess. ORIGINAL FIRST POST (11/6/2021) below… Not really a "build" -- more of a recent "tank transfer" with a couple of minor...

Update: Once I added a HOB refugium to my sumpless 40B, it was game over. The tank started leaking within a week because the extra weight pulled the tank too far out of level. As such, I upgraded to a Red Sea Reefer 250. If you'd like to start there, click here. If you'd like to read through my...

I may or may not have been bit by the saltwater bug... Thinking about setting up a Nano (10-15 Gal) tank of BTA and some clowns. Would be using this as a QT tank for new frags (on a small rack) and keeping and propagating Nems. In the long term is this possible? I would be able to set up the...

Selling cpr aquafuge 2 medium hang on refugium with pump. Sells for $250 on marine depot. Looking for $150 pickup, $200 to ship. Pictures upon request. Thanks

Brand New Aqua 8 Watt UV Sterilizer HOB for Tanks up to 70 Gallon. Never used, bought to remove Dinos $75

Currently running an Aquaclear 110 with floss, a little tub of miracle mud and Chemipure Blue. This set up worked great for about 8 months until I was on the road for work. Things got out of wack when the ATO switch stopped working and things got bad. Before that even took place I suspected my...

Hi I'm debating which HOB filter to buy. I was planning on turning them into DIY refugium with chaeto. I know the Aquaclear filters are super popular for the diy hob refugium but I seriously dislike that it doesn't self-prime. I have yet to see anySeachem tidal refugium diy which is why im...

I’ve been struggling with keeping my phosphates under 1ppm and was wondering if I should try harder with doing water changes more frequently as in twice a week? Or should go to get a phosphate remover? Both my tanks have HOB equipment if that makes a difference with anything. I will post my...

I have a 29 gallon reef tank already set up with HOB equipment that I would like to add a sump to. I can’t bring myself to spend over $100 on an hob overflow box so I thought I could make one out of pvc. Has anyone else done this? If you could share some tips with me that’d be great. Thanks!

Hi Everyone, I currently don't have a protein skimmer, but I am looking to get a HOB protein skimmer. I have a 46 gallon bow front tank. I am thinking about adding this to my tank soon, but am looking for suggestions. If you could list your suggestions. I am not trying to break the bank on a...

Setting up a 29 gallon reef tank and I found a marineland penguin 200 biowheel hob filter. I took out the biowheel because I understand they’re just nitrate traps. Any recommendation on what media to run in it? I was thinking some phosguard, some filterfloss and maybe chemipure. Should I put any...

I’ve had my 55 gallon reef tank up and running for about a year and a half (with no problems what so ever). It does not have a sump, just a HOB protein slimmer and filter. It has about 60lbs of live rock and a 3-4 inch sand bed (about 6-7 inches where the diamond goby lives lol). I’m running the...

Hoping to find an overflow in the 300gph range. Any old Eshopps or Cprs out there?

Selling my Aquamaxx HOB Skimmer with bubble stopper. Total value of 250$. Used for 1 year and its an Excellent skimmer. No noise or micro bubble issue. Its clean, well maintained and ready to use. Moving continents and selling all my equipment. Please ping me if interested. Asking for 150$ and...

Hello, We are selling our CPR Aquafuge HOB Refugium (Small) That comes with the LED that works Great for growing Claito Algae!! We used this for about 2 months and removed all the nitrates in our reef tank and now have no use for it. ***Price New is 194$!! We are asking 110$ Shipped*** You...

I want to add some additional water volume, better filtration, and a safe place to grow some beneficial algae to my "all in one". I am running into some issues trying to figure out a good way to get the water from my tank to the 10G that will be sitting below it. The picture below shows how...

I have an original cpr hob refugium.. acrylic. I have had it since the early 2000's I believe it is a second generation if I recall correctly. 13 inches long 4.5 inches wide and 12 inches in depth. no pump.. intake is about 3/4 of an inch. the last couple times I used it I attached a original MJ...

Hey R2R members I'm going to set up a 40 gallon breeder tank for frogfish and have a few other tanks, none of which have sumps etc, that being said I'd really like to do this one "right". I'd prefer not to drill the tank, and would rather use a HOB overflow, but have heard of them being a key...

hey reefers I've got a 50 gal Hagen tank. Currently running an hob reef octo skimmer, hob seachem media filter and hob uv sterilizer. I understand it's a lot of clutter but I really don't mind. Anyway I want to add an hob refugium but my concern is tank/glass failure do to weight on the back...

Hello everyone! I have an aio reef tank that I want to add a small refugium too, not necessarily for the benefits, more for just a challenge and aesthetics. I have 2 options, I could use one of the unused back chambers and put a light in it which I think I could grow chaeto and a mangrove. Would...

I have a 29 Gallon standard aquarium. It does not have a sump and is filtered by a CPR Bak-Pak Skimmer and a Tidal 55 HOB filter. The next piece of equipment I would like to add is a UV Sterilizer. Most of the "better" UV filters seem to be large and would work best with a plumbed system...

I have an almost totally dead reef tank the current filtration is a really bad HOB filter that came with the tank. HOB is the only option and I would like to know if these peices of equipment would work. Reef Octopus Classic 1000 HOB Protein Skimmer 2 ViaAqua Poly-Reactor (Multi-Media...

Hey Reefers, I've got a question. First I'll let you know what I've got going on in my tank. Currently I have a 600 gph power head and a aqua-tech 30-60 HOB filter in a 30 gal reef tank(30 x 12 x 18). I'm working with a saddleback clown, goby, and blenny, a snail and a Scarlett hermit(hoping to...

Trying to decide between keeping my HOB filtration system or switching to a canister filter like the fluval G3 or the fluval FX4??? any suggestions? not sure if i even need more filtration or if i will really see a huge difference after spending the money. going in a 55gallon Non drilled tank...