Still trying to replace my sand filter.
I have a possible deal on a de 7220 that is somewhat used and brings a load of new questions.
de 7220 seems rather large for my ~20000 gal pool. Is there such thing as too large?
How about the pump? Will my existing 3/4 hp have any performance issues?
I have used some DE in conjunction with my sand filter and found it kind of messy but not too bad. I wonder how much of a pain the maintenance will be. I backwashed my sand filter about twice a week on average. Are DE filters on par with frequency of backwash? I think I looked up that the 7220 uses 9 pounds of de each recharge, 18 pounds a week seems like a lot of extra purchases and hauling if that is the case.
Any other words of advice from DE owners/users?