Review on UPETTOOLS Aquarium Circulation Powerhead Wavemaker Pump: Efficient Submersible Fish Tank Pump - Delivering Optimal Water Flow with Adjustable Suction Cups by Nicole Jones

I bought this for my gallon saltwater tank and it's VERY POWERFUL! Everything flew out of my tank to the other side lol. This should be used in a 200+ gallon tank! Great product but it was the jet engine in my tank! Very quiet and pleasant product; just too much power for my tank! I ended up going back and buying 2 individual 530 heads and enough for my 65. I also like that they are separate too. This one is dual and has no power control to turn it on or off. I hope this helps someone. :-)