I have been reading about the different types of filters, (sand, DE, Cartridge) I like the idea of the easiness of the sand filter, but like the idea of Cartridge filter. I was wondering about using both. I have found some post that pose the question, however there was no answer. I have seen the suggestion of both connecting them in series and parallel, switching between the two. I have read about using DE in the sand filter, however that would mean involvement on every backwash. Being an automation engineer, I would like to automate the backwash and not have to worry about it.

Bob