Hi,
I have a few HOB filters that take cartridges. My plan is to stop using cartridges and just put some type of sponge material in the cartridge compartment to work as a mech and bio media. Whats the best and cheapest stuff to use?
I have used the foam from the Aquaclear filters before. But I know there has got to be a cheaper alternative.
Thanks
I have a few HOB filters that take cartridges. My plan is to stop using cartridges and just put some type of sponge material in the cartridge compartment to work as a mech and bio media. Whats the best and cheapest stuff to use?
I have used the foam from the Aquaclear filters before. But I know there has got to be a cheaper alternative.
Thanks