Great little pump with plenty of power for its size. I bought to replace the air pump that came with my "HB-210: Finnex External HOB Refugium / Breeder Box + Air Pump" and it worked great. I have this pump in the dugout and I have to turn it down a bit as if I turn it on full it tends to seep over the rim and into the tank on the side instead of the correct outlet but it is like I have about 10 pounds of living sand and boulders, and each chamber is full of macroalgae. I feel like it has become a great little haven in my 20 gallon nano tank and works great for us since we can't put a sump on this tank. The only downside is that sometimes the suction cups detach from the tank, but that could either be something I have in my tank or sometimes red slime algae blooms that could be causing this. It's also very easy to clean, has been working great for about 2.5 months running 24/7.
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