ok thanks..i have another question..
when do i open the valve on the top to let air out? (other than opening it up to clean it)
Re: DE filter backwash (newbie)
ok thanks..i have another question..
when do i open the valve on the top to let air out? (other than opening it up to clean it)
DE 3620 Hayward. 16x36 Inground rectangle (1995). 7.5 ft deep end 3.5 ft shallow. loop loc cover with mesh panels
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