I have a 125L aquarium (lightly stocked with 3 cichlids) and I am wondering how much bio media is actually needed? At the moment I am running a JBL external filter with 2 full baskets of bio media. This is made up of a combination of SeaChem Maxtrix, Fluval ceramic rings, and JBL's MicroMec. Ideally, I would like to free up one basket by removing the ceramic rings.