Versitile filter. Great for low water level tanks. Stuff some java moss into the filter and it will grow down the water flow into the water, looks excellent.

It is near impossible to fill the aquarium all the way if you want to. Not a very impressive flowrate.

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Its cheap and good. Could be better, but good for small tanks.

In writing this review, keep in mind that I am using the stock filter for the 2.5 gallon acrylic aquarium kit. This filter is great for low flow, small tank size, low bioload applications. Do not count on this filter to be a performer for larger tanks or well stocked tanks.

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8 tanks running now:
1x 220 gallon, 2x55 gallon, 1x40 gallon long, 1x29 gallon, 1x20 gallon long, 1x5.5 gallon, 1x2 gallon
Gouramis, barbs, rasboras, plecos, corys, tetras, fancy guppies, swordtails, ottos, rainbow shark, upside-down catfish, snails, and Max and Sparkles the bettas.

I got this for a basic filter and for some water movement for my 10G turtle tank, it does it job for the most part. It only filters like 1/3 to 1/2 the tank if theres some decorations obstructing the water column. Turns on and off fine(I leave it off days at a time when waters low, before changes.)

I recommend this product for basic applications

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In my 29 gal:
4 serpae tetras
1 Flame tetras
1 Zebra Danio
1 German Blue Ram
In my 55 gal:
Trigun's 55g Tropical Community!
6 Glo-lite Tetras
4 Emerald Corys
1 Dwarf Gourami
4 Peppered Corys
25 Neon Tetras

Seems to work well, the filter bags can be washed and refilled with carbon, but replacements aren't terribly expensive. It takes up a bit of space in the tank and the water level has to be down about two - three inches from the top of the tank for the filter to work.

I replaced the carbon filter with a small mesh bag filled with carbon+zeolyte. Figured since it was a small tank it could use the extra ammonia removal. The openings at the water intake are pretty large though. For an intended use of a 1-3 gallon tank, it's safe to assume there will be small fish in them... which should have warranted smaller openings that fish couldn't get sucked up into. The air pump died after about 2 weeks of use.

While it is the most quiet filter I've ever owned, it takes up too much space in-tank for it to be of any real worth.

When trying to feed bottom feeders the filter usually gets the food before they do.

Snails clogged mine.

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A severe lack of trichogaster.

Just because your Gourami is sick does not mean it is always Iridovirus, DGIV, Gourami Disease, et cetera.
Look at all the other factors in your tank before coming to this conclusion.

This is a VERY quiet filter. Seems pretty reliable.

It does take up a bit of your tank interior space, and the intake (lower) portion of the filter can be a bit difficult to keep clean.

You will have to leave a gap from the top of your tank to the outflow of the filter, which also takes up valuable tank space.

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