- Dec 22, 2009
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Wow, how many tanks have you got? Good gracious. I have about 400 gallons of tanks (100, 49,39. 29, and multi 10s and 5's), but I use a biological filter plus the old whisper filters. I just rinse them, and occasionally sew them a new bag. I leave the charcoal as bacterial mediium. Works great, and I only do 10% water changes every 3 monthes. (mostly to clean the layer of grime out of the gravel)
*I* Personally only have 2 tanks right now but helped a friend clean about 800 gallons worth of tanks
