hygger 4200GPH Double Head Aquarium Circulation Pump, Quiet 12W Aquarium Wave Maker, with Strong Magnetic Suction Base, 360°Adjustable Power Head, for 110~240 Gal Tank

Fish are loving the extra flow/current this delivers along with the increase in surface disturbance for extra O2.

I thought I would need 2 so I bought 2 but they are so powerful I only needed 1 for a 6 foot tank. The are quite and powerful. Worth every penny

I had just set up a new 125 and was shocked how powerful this thing is. I ended up having to send it right back because I think it was just too much for my fish. Other setups with bigger fish, if you want to move water, get this

Just as good as any other, however a bit too strong for my 55 gal tank. I did return them, but not because they were defective or anything like that. I just felt they would be more useful for a 125 Gal tank. It's a great product and sticks to the glass well. It is made of plastic though so I'm not sure how long it would hold out before breaking. I suspect it last a while because you really don't handle it.

I purchased two of these. The first only one side worked. They replaced and the second one worked great for a few months. One side has again stopped working. It still moves water, not as much as it should, but enough that it will stay in the tank till it stops completely. Probably won't be long, but we will see.

Very powerful in my 75 gallon

The saying "you get what you paid for" hit me in the head with this. At the price point, I thought this was going to be a great deal given its high flow rate. Meh, no. the 2100GPH feels more like 400-600GPH. Packed it right back up same day I received it for refund.

Very nice wave maker. Just what I needed. Its quiet and moves the water just like it says

Great wave maker. I had found cheap options available, but decided to buy this one because I bought a small one in March and really liked it. I opted for the 5w dual head for my 90 gallon to keep my serial killers (African cichlids) “occupied” and not try to kill each other.