I have a Whisper 100 air pump (the newer domed style...or should I say doomed style) and the diaphragms just crapped out on me. Where can I just buy the diaphragms? Tetra sells a replacement kit that includes the arms, bushings and magnets for about 13 bucks. The entire filter I can buy for about $23. I only want the diaphragms. Does anyone know where I can purchase these? Thanks.
