Originally Posted by Adina
and also should i replace the white filter? nothing is wrong with it and it allows the water to flow through but would i need a filter that would filter out finer particles? (i will also be getting a pre-filter to put over the intake because i plan on getting some cherry shrimp)
I believe he meant "the"
The white filter cartridge is fine in there, I would just get a bag of 100% poly-fill from Walmart or some kind of craft store and stuff it between the last cartridge and the biomax.