Whats the lifetime of ehfisubstrat, biorings, biomax etc? I have mines for only 4 years and heard they tend to clog up and become useless after a while(I rinse mines once a month with tank water).
Whats the most effective/cheapest bio media replacement that will last long? I also have a sand filter and wet-dry running which dont need replacement but my I need something for my canister. Thanks
Whats the most effective/cheapest bio media replacement that will last long? I also have a sand filter and wet-dry running which dont need replacement but my I need something for my canister. Thanks
