Post by Cyberguppy on Jan 29, 2006 20:46:22 GMT 10
probably the cheapest filter available is the old style corner filter. this usually consists of a small box with two tubes and two compartments, the top being filled with fibre wool, the bottom being filled with charcole or marbles. a hose from a air pump is then attached and bubbles force water through the media creating the filtering action. These are very gentle and great to use in gravel-free tanks and fry tanks. Traditionally two are used so when one is cleaned the other can maintain the tanks cycling process.
