Rated 1.8 out of 5 by 5
Rated 5 out of 5 by Rainydaywoman Lots of "fizz"
These work wonderfully, They really produce lots of bubbles (almost too bubbly for a 10 gallon aquarium). If your looking for LOTS of fizz, these are for you.
January 18, 2016
Rated 1 out of 5 by yksyaps VERY POOR QUALITY
I got the same result from the end of an airline........
April 2, 2014
Rated 1 out of 5 by Layne19 Try Something Else
I purchased 4 of the 12" non-extendible for my pond. Seemed like a good price for a lot of air volume. Not even close. Not a single one of them has output for the full length and 2 leak from the connection end as well. I have them connected to an AirMax pump with 4 outlets and even with only one connected, the other outlets blocked and the pump all the way up the result is the same. I am going to keep and use them because they're not worth sending back, but do yourself a favor and try another product. I will end up replacing these before the end of the summer. I tried to give no stars but was not allowed.
May 25, 2013
Rated 1 out of 5 by CyberEdie Barely half of it works
I got (2 each) 6" and 12". Just the first half and a spot at the end work. I too, tried a stronger air pump - still doesn't work properly.
September 20, 2012