Aqua Culture Bubble Aquarium Stone, 1 ct

I just recently installed one of these bubble stones in my 10 gallon tank using a Whisper pump for 10-30 gallons. At first, only half the stone was blowing weak bubbles. I then took it out and turned the black knob like thing on the end of it (end that doesn't have the air tube). Within an hour or hour and half (like directions say), the whole thing was bubbling. I am very pleased with this product and would recommend it to anyone.

ok, i had to write this review because i read up on all these when i decided to get one. I wanted the wand that you stick to the side of the glass. they didn't have that. so, i got this. I LOVE THIS!!! It bubbles like crazy. i don't know why people were having issues. The only thing i can think is if they didn't follow directions and soak the stone for a while before turning on the pump. I have a 29 g tank with 6 beautiful goldfish. They love this. they play in it all day! WEll worth it. I would pay so much for this and it is cheap. I say buy, buy, buy! my son got the wand and it doesnt bubble as well and the fish cant go back and forth very well because it is suctioned to the wall. this stone however you can put anywhere in the tank. love,love