I have a 10 gal planted Have a topfin silent stream hob. I recently had a huge crash and lost fish so I added some media. I have regular filter floss/sponge a bag of bio rings and the old carbon/floss cartridge they sell for the filter. Can I take out the cartridge and add another regular sponge or should I replace with the new carbon cartridges I have.
P.s. When I do take the cartridge out I won’t even rinse the other media to save bb.