Hi guys,
I am using an IOUS tank with a media compartment which has the length and breadth of a Mr. Aqua OHF filter box.
I have been using filter wool, which compresses over time in the IOS. It becomes less effective then. I have tried many brands of filter wool
and the same thing happens.
I have thought of using bio-sponge but can't seem to find a piece with the correct dimensions.
Are there alternative mechanical filtration media of a suitable size?
Thank you!