worked well on a 55 gallon aquarium.
925006
This product worked as expected.  It was a great price.  I had quite a bit left over after sealing my 55 gallon aquarium.
4495889
This stuff is great! Very clean, New tank so I didn't rinse but was clear by end of day.
55 gallon tank, 360 gph canister filter, 100lbs of substrate. Moderate amount of plants and a finnex planted+ led lamp (48").
Plants do so well, love the dark color. Makes my Buenos Aires tetras look amazing
4886655
I use this on my 55g reef tank that houses a mandarin.  I hooked up an old Maxijet powerhead to push water into it, although I had to cut a large hole in the tubing from the jet to the box (the part that's in the main tank) to reduce the low into the box, otherwise it would make the box overflow completely, as the overflow section back into the main tank is pretty small, not much lower than the top of the box.

The hole in the tube has an added benefit of more flow in the main tank.  I had to use a small piece of tubing not included in the box to do this, but no big deal as I have spare tubing laying around from other aquarium projects.

I was originally planning on putting some chaeto in the box, but I just couldn't get the right kind of flow that I wanted, so I kept my chaeto in a chamber of a HOB biowheel filter with a light on it - works fine.

I filled the box with rock rubble and sea shells (bought from a hobby store) with the intention of using it as a fuge for pods for my mandarin.  It didn't take long for pods to show up in there, but after weeks it was just ho-hum amount.

I ended up buying some tigger pods from my local aquarium and about a month later the population just exploded.  Every day I suck out a bunch of pods and put them in the main tank.  I occasionally put some pellets or other fish food in there but that's it - no light on it or anything else.

It comes with some dividers in case you want to have multiple chambers, but I opted not to use them.

Couldn't be happier with the results for the price!
4833821
i have a 55 gal. tank and this works like a dream. i tried the regular siphons , forget it!  If you have aquariums i highly recommend this.  I couldn't believe the amount of dirt that was removed.  and no carrying buckets of water.
1423443
This circulation pump is very well built and simple to install and adjust.  I have a 55 gallon saltwater aquarium and it's the right size to give water circulation around the tank.
3242837
After reading the other reviews about it leaking, I decided to just set it up inside the aquarium attached to a small internal power head. It worked great after slight sanding of the plastic blades to facilitate smooth spinning action. It worked just as described, converting CO2 bubbles into an almost purely dissolved water mixture. The only issue with keeping it in the tank is that algae begins to build up inside. Not a serious problem though, just take it out and clean it every few months.
2430567
Made a good replacement for a old system while replacing the tank.
1394013
I'm using this on a small pond with two turtles and a DIY filter. It does the job very well.
2468157
It works as advertised and was a good value. Now I can properly monitor the temperature of the water in my aquarium.
3664630
I have 2 large Goldies and a Pleco in a 75 gallon tank. Was having to clean it every week.  This expended the time between cleanings to two weeks.
1647072
Was exactly what I needed for my 15 gallon tank -  plan on buying this item again in near future.
2771693
This uv sterilizer worked wonders for my 125 gal outdoor aquarium. I have one bass in it and was constantly fighting pea soup like green water. I couldn't see more than a couple inches past the glass. I tried everything. Finally I got this uv sterilizer, hooked it up and voila! The water was clear in about a day and a half. My only issue is that air gets trapped and I have to unscrew the viewing port to let the air out pretty much daily. But that may be the fault of the pump.
3586722
Even adding after the tank was filthy, it cleaned up my 55 gal tank great.  Not sure how long before I notice most of the waste under the rocks gone and the pumps new filters still looking clean.  I don't add it every week like it states on the bottle.  I just add it when I notice a waste build up, but the tank is not ready for a full vacuum and water change.  I am not a fish owner that believes in lots of water changes. I monitor ammonia, nitrates and PH closely.  I have very hard alkaline water and notice more fish stress with water changes than any other time.  In fact I lost one of my two 12 inch Oscars after a water change.  (However, I recognized that the tank was overloaded at that time and I think the weaker of the two was very fragile.)  Anyway, bottom line, the cost is more than made up for in filter costs, time saved in cleaning the tank and piece of mind.
3022664
Worked well and pleased with it's performance .
2327894
This stuff works given time. We had a bacterial bloom in a 55 gal marine aquarium that turned the tank yellow.
Swapped  out the filter elements for filter floss and added the product. The turbidity was reduced by about half over night. Repeated the procedure the next day with new filter floss and our water was good the following day.
This is a reducing agent and will lower the oxygen concentration in your water so you can't repeat the process endlessly. However two tries worked for us.
2259259
Worked great when we moved. Put fish in 5 gallon buckets, used splitter for the air pump and away we went. Not the strongest air pump, but it did what I needed it to do for a few days.
1666900
I used this product a few days ago, there are adapters for the kitchen faucet, the entire process was about an hour for a 55 gallon tank, it does a great job of cleaning the gravel and its adapters allowed me to return the correct water temperture back to the tank, and not a drop of water was spilled on the floor, great product!