VAYINATO Rs Electrical Hang On Noiseless Aquarium Cooling Fan Rs-332, 3.5W, Suitable For 30-60 Cm Aquarium Fish Tank (Black)

This is really noiseless. No sound at all. Already reduced temp from29degree selcius to 26degree selcius over 2hrs .excellent choice

Don’t want to boast up anything. It works very well and super effective. Its rainy here but my water temperature was 28.1C in the morning and after the fan now it is 27.6C. My blood parrots should have 26-27C. It has 2 step adjustable switch which will help to adjust the fan flow. It is noiseless and consumes less power. It does the job and value for money. All you have to do is choose the correct watt for your tank size.

I found it worthy and useful. It reduced the temperature in my 200 Litre tank by 3 degrees over a night of running, which is quite good.

Very good fan for aquarium and it cooled water by 3 deg

I don't know if I got defective piece it what but it makes to much noise. I'm fact this is more loud than my filter, i would say 3-4 times louder than the filter. Airflow is okayish.

Worth the value. Works perfectly. Reducing temperature more than par. Price could be less.

I saw temperature to be 30+ in my tank, it's inside house, when AC was on its 28/29, later 30+, I have 150L planted tank, Cardinal Tetra, 3 color Zebra, Algae eater, Snails, Placos etc .... It's best to keep 26-28°C, this fan makes temperature to drop from 30-27/28 ... With AC it dropped to 26.5 .... EPIC BUY