ive been having problems keeping steady air flow through my stone. i have had 2 of those whisper 100's and 1 other pump, and they all loose there power after a few months. any one have a good one they can recommend?
here is a pic of the stone, and its in a 24" deep tank... its going good in the pic but now its worn out

here is a pic of the stone, and its in a 24" deep tank... its going good in the pic but now its worn out
