cheese cloth
Add some more filter media… like a sponge block… in the reservoir behind the chinky Penguin filter cartridge… or see my blog for “Filter Profile - Penguin 200 Bio-Wheel” and how I modify my cartridge to add a lot more polypad filter media to it.
Lenny Vasbinder Fish Blog - http://GoldLenny.blogspot.com
Category: Philippines Internet Koi Society
