Thanks for the reply. I think the pool guy was saying that the cartridge would end up covered in gunk that would be hard to clean off without a lot of work - he was saying that you'd need spare cartridges so you could clean them while still have the filter operating whereas you'd just backwash...
I need a new filter as old sand filter died - valve and lateral gone. I'm keen on the Pentair Quad DE but the pool guy is dead against it as he says where I am in north TN surrounded by trees and with the pool only open half the year that the Quad will not work as well as a sand filter. He told...
