WendysJungle
- #1
After 7 years with my trusty Biowheel filters, I am finally switching to an external canister (Penplax Cascade 1500). The biowheels have been great filters, but I find I want more power with discus fish. This a 120 gallon planted tank, well established. Should I cut any of the filter media out if the biowheel filters and place in the penplax when I switch?

