Mechanical pre-filtration for pumps. Prevents flow reduction due to premature clogging.
The EZ Bio 11 has a single gray core filter element. This gray core element is 4 inch diameter and 7.5 inch long. The older style Blue cores are no longer available. The EZ Bio 20 has 2 filter core elements; an internal Gray core combined with a larger Green outer core element. The outer Green core element is 8 inch diameter and 7.5" long.
These core elements slide over a rigid slotted pipe. This rigid slotted pipe has a 1.5" male thread on one end and a 1.5" female thread on the other end. It is possible to connect multiple slotted pipes together to extend the length of the EZ Bio.
Replacement core elements are available in Gray size 4"dia. x 7.5" and Green size 8"dia. x 7.5".