Petzilla Aquarium Chiller, Fish Tank Cooling Fan System for Salt Fresh Water (3-Fan)

little tight on the rim of the tank but cools the water fast

I am using this on a 20 Gallon Saltwater tank. There are two settings for the fan for speed. It is fairly quiet on the first setting and audible on the second due to the wind rushing through the fan. Side note, if you have a tank lid you may not be able to use the provided securing screw. Overall its a great product for those hot days where you need to keep the temperature of your tank down.

I am using this to cool down my axolotl's 55-gallon long tank. I got the 3-fan version. It's kept my tank at a steady 60-62 Fahrenheit depending on the weather outside (If I keep my window open; its been 10-20 degrees celcius around here). It's loud on the highest setting but not bad on the lowest setting, and given that I have filters and other stuff that already make a little bit of noise, its barely noticeable. It also causes my tank to loose about an inch of water weekly due to increased evaporation.Way better value than a chiller.Gave it 4 starts instead of 5 because it WILL NOT FIT ON A RIMMED TANK. I just proped it up against the edge of my tank and on my tank light, so its suspended above the water. I even dropped it in once and it works just fine. Its a but chunky too but it works so well that i'm ok with that.Overall i'm really happy! Excited to see if it'll keep temperatures down in the summer without me having to blast the AC.

Broken. Power connector pushes into the cover and is no longer accessible to plug connector in. I had this 1 day and tried to move it and it's already broken. Also, the cord is only 36" - not the length advertised. They aren't super quiet either but I could have over looked that if they actually worked!

I bought the single fan version of this for a 10 gallon tank with two small goldfish. They do fine in temperatures up to about 75 degrees but get grumpy and agitated at anything warmer, so I've been running this on hot days this summer. It cools the tank down quickly on the lower setting even when it's 80+ degrees in the house and is so effective that I need to leave the heater in to stop the temperature from getting too low.The rim of my tank is a little too thick for the fan to clip onto (the plastic isn't particularly flexible so there's not a lot of wiggle room in the thickness they say this will work with), but it rests easily on the rim in a corner propping the hood open an inch or two. With this setup, I lose almost an inch of water to evaporation on a hot day.The fan has two speeds but the lower one is more than adequate to keep my tank cool. I wish that instead of the higher speed, there was an even lower one that I could run at night - my only real complaint is the noise level, which isn't outrageous for a fan this effective, but the tank is in my bedroom and this is WAY too loud to sleep through.Overall it's a great little fan for the price and I'd buy it again.