Tetra Whisper In-tank Filter 3i Review

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(More customer reviews)I bought this specifically because it said it was for 3 gallon or smaller tanks. I wouldn't ever expect this to work for a 5 gallon tank because it specifically says 3 or smaller. BUT I did hope that it would be ok for a 1 gallon flat sided bowl...it's not. I bought this to keep red rosy minnows (feeder fish) in for a week at a time. It has already killed 3 fish by sucking them up against the intake. There is no control over how much/little water is drawn in. I even used foam, from another pump to see if it would help. The fish are still swimming for their lives and any time they stop they get drawn against the foam. There is no way I expected it to be that strong considering what it is.
On the other hand, were it not killing my fish off - it is pretty quiet. There are bubbles behind the filter which makes the top bounce and/or lift up, which another reviewer commented on, but the bubbling is still not obnoxiously loud and you can remove the lid if the clicking gets to you. The motor itself is quiet if it isn't touching anything on the sides, but I am still only giving it two stars because the motor moves around on a counter top and will sometimes move itself up against the wall or bowl and be louder until I move it back. I really wish this had worked better. For a three gallon tank, maybe it would be perfect, for a one gallon tank, it is too strong.

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The Strong Silent TypeFull one-year warranty.Includes filter, air pump, filter cartridge and 2 ft. of airline tubing.Same quality and performance of an external power filter.Air-driven design filters up to 20 GPH while oxygenating water.Keeps water crystal clear.Adjusts easily to high or low water levels with mounting suction cups. Two Filters in OneMechanical FilterThe Bio-Bag uses dual-sided mesh to catch debris and waste.Chemical FilterUltra-activated carbon removes odors and discoloration. It's What's Inside That Counts.The air pump provides bubbles that move water through the filter, efficiently filtering and oxygenating your aquarium.Air flows from pump through airline tubing.Air bubbles carry water up to intake tube.Water flows through Ultra-activated carbon absorbing odors and discoloration.Water flows through cartridge floss, trapping debris and waste.

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