I have a 64litr aquarium and the pump gives a good flow of bubbles for that size tank. It's also very quiet can hardly hear it. I would really recommend this make of pump. There is no problems with it.

Silent running air pump , ideal for the smaller tanks , light weight , always sit pump above water line to prevent unwittingly draining tank .

When I went to buy the original fir Bio Orb they did not have so got this it is okay but dies not seem to be as powerful I have a 30 ltr this is meant to suit up to 40.

Although you sacrifice the BiOrb light adapter and need to plug that in seperately, the pump itself performs well and seems better than the previous BiOrb pump we had. Seems to have a better air flow.

Great air pump, not too pricey and works well. My fish seem much happier and healthier, and love playing in the bubbles!

Bought this for my tropical fish tank and it doesn't work will be taking back