This is a GREAT item. I use it in my 55 gallon ...
341650
This is a GREAT item. I use it in my 55 gallon fuel system for my off road buggy. Made using my fuel pump much easier.
3795350
This stuff is awesome.  My 29 gallon tropical tank was very cloudy. I  vacuumed it and it was still very cloudy. The next day I replaced the charcoal in my aquaclear 70 with purichem. Within minutes I noticed that the water in the filter was like glass.  I  went to work and came back around 6 hours later.  My tank looked amazing.  It was almost like there was no water in the tank and my fish were floating.  The water was that clear.  3 days later the water is looking the same way.  I will definitely keep some purichem on hand now.  Great product.
1259347
It's really good...but for a 5 gallon tank it's ok......it would work better for a 55 gallon tank....but stiil recommend it....=-)
4696626
I got the 200-Watt one for my 55 gallon tank, Its been close to a year now and it's still going strong.  As some others have mentioned the low flow indicator is both useful and a pain.  With my HOB filter I had to put it right up next to the intake tube. Now that I have a canister filter that produces a good flow throughout the tank I can put it almost anywhere.  I find it close to the output to be best though.  Its usefulness in making sure you have enough current to circulate the water and keep your fish happy is well worth it though.  If your water is sitting stagnant you have bigger problems that just temperature.  I'm fixing to upgrade to a 75 gallon tank and am confident that this is all I need.  If that ends up wearing it out though I'll replace it with the 300 watt version of this same model.  OH and it's fully submersible, I haven't seen one that isn't.  I think the water line at the top fools some people into think that is as low as it can go, that line is the minimum to which it needs to be submerged.
384267
I don't like that this takes up so much space at the bottom of the tank. That plus the however many pounds of gravel on top means there are 4.5 gallons filling my 5.5 gallon tank up all the way to the top. Less swimming space for the fish, and less water in general.

That being said, my plants are all doing marvelously. I assume it's because the warm water coming off the heater gets circulated through the substrate. Also, my water parameters continue to look good. I love that the water flow doesn't toss the fish around like a waterfall filter does, even small ones (I have a betta and for him the struggle is very real). It also makes more sense logically to have the dissolved ammonia and nitrite pass over the surfaces where the nitrobacteria live. My dad has had a custom vertical 20 gallon tank with a built in permanent undergravel filter and 4" of gravel for at least 35 years. His neon tetras and albino catfish (that's all he's ever stocked it with) live for about 10 years, and he changes the water maybe once a month. I realize that it's only one sample, but I've never seen a waterfall filter with that kind of life expectancy.

I originally bought this for my Tetra 3 gallon Cube aquarium. The product comes in two halves and one half fits perfectly into the bottom of the Cube. It also fits perfectly (with enough room so gravel hides it from view on the front and sides) into an Aqueon 5.5 gallon tank. I bought this with a Tetra Whisper 10 air pump. Works great, but you'll need a gang valve to make the airflow even between the two water uptake pipes. I bought the Jardin Fishing Two Way Air Pump Manifold on Amazon. It fits the tubing that comes with the pump and the tubing you can buy at Petco.
860161
Great for Acclimating Fish Love This Item is the BEST ONE I HAVE FOUND YET. It was a bit tricky to setting it up the 1st time I used it but once I did it was GREAT Highly Recommend this item.
2691087
Although I saw many mixed reviews for this product, we took a chance on it.  It arrived in good shape and fits our 55-gal with center bar (48 x 13 1/4 inch) aquarium perfectly.  As our iguana gets bigger, we might need to invest in cage clips, but for now, we are supremely happy.
648271
this item is great for the price. it does what it said, it cleans out my tank and it is always crystal clear. will buy from again
768741
I bought this light in the biggest size and although it is not long enough for my 55 gallon it stands on top of my glass lids perfectly fine. I wasn't expecting much out of it but when I plugged it in about an hour ago I was very surprised. My 55 gallon is well lit with just one of these and I love the blue light feature. It's a good buy seeing as these go for $130 in stores. I can't speak for how long it lasts but so far I am impressed!
3282356
Looks great in my 55 gal. Cheap price build seems ok.  Looks great works great
4627510
i was a little worried before buying this filter...cause i had seen a few reviews saying it broke down or stopped working in a years time or less... but the Price was Right so i bought it... SO far it works Great i got mine for a 65 gallon tank with Oscars, Kissing Gourami, Rainbow Sharks, and two Peco's... Oscars are very dirt fish... filter does its job... easy to clean and maintain... very quiet if you keep your water level high... alwsome water flow... it states it can filter up to a 90 gallon tank... had mine 4 month no problem... oh.. P.S. found out you can use the Walmart Aqua-Tech 20-30 / 40-60 filters they fit perfect... i've had another 55 gallon tank for 6-7 years the filter is going strong and it use the Aqua-tech filters... had lots of experience with them i clean and rinse them out and use them over and over i replace them once every 3-4 months... my fish are healthy and happy and tank is super clean and clear... hope this helps
1096929
This thing is a beast!  Having a large surface area for filter media is a good thing. I say this is good upto a 100-150 gallon fish tank that is modestly stocked. Keeps my water clean and clear, the fish loves it and I don't really have to maintain it as often as the other filters. More time to enjoy and less time cleaning.
3632676
Great Item.  I used it to place under a 20 gallon aquarium so I can move it and it worked wonderfully, and without causing a mini-tsunami in the tank.  Well made and great price.
1620064
Great filter! I replaced all 3 of my filters for my 55 gal tanks with this one. Does a good job keeping tanks clean.
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
774346
I have this in a 100 gallon acrylic aquarium and it kept the water perfectly at temperature. I now use it for the same tank but with a turtle instead of fish and it still works great. the only reason I did not give it 5 stars is that the suction cups are horrid. I have to reattach the heater every couple of days.
1318061
This rather long aquarium algae cleaner is the best I have ever used. My 55 gallon tank had a lot of algae on the glass because I wanted the tank to reach bioequilibrium (bad idea), anyway the algae became unruly. I tried the magnetic scrapers, but they did a splotchy job, then this unit came along. You have to press hard, but it clears and cuts the algae away. Now the front of the tank and the sides are clear and pleasant to admire the fish. The back is still somewhat covered, but the pleco will take care of that. It comes with four parts and the razor. three are rods then there is a plate that screws onto the bottom piece to hold the blade (which you can flip once it wears out). It only comes with one blade so you will have to order more eventually. The parts of the rod are very solid and screw into each other. It is heavier than it looks in the picture.