[quote=fishlover78;477885]Hi everyone, I have acquired a very dirty whisper 40 power filter from a teacher at school who tore down a very neglected tank. the thing is absolutely disgusting, so I have a few questions about cleaning it. #1, what should I clean it with?, there is lots of algae growing in it(I know not to use soap). secondly, since you can't buy a refill cartridge for the "aerobic bacteria grid" should I wash it really well? I don't believe that there were any diseased fish in the tank. and thirdly does anyone know the GPH for this model (Power filter 40)? thanks again! -fishlover78
P.S. just as a random question, is there any know GPH for a lee's economy corner filter? I wanted to know if you were slightly under ther 10 GPH you could throw a few corner filters in the tank to bring the GPH up. thanks again! -fishlover78

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210 GPH for Whisper 40. clean it and use hot boiling water to sterilize then use it.