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DE filters — Hayward ProGrid and other Hayward DE filters use a different grid configuration (8 full grids
undershooting lets copper fall out of solution and stain surfaces
Wall flow rate: 208 GPM 3"plumbing
schedule 80 through 3" (90 mm) diameter
Taylor DPD Powder Reagent, .25 lb | R-0870-J Ladders DE filters — Hayward ProGridTaylor FAS DPD Powder Reagent 1 4 LB Taylor formulates its reagents to remain effective for at least one year, with only very few exceptions (molybdenum indicator in liquid form is one; after four months old it should be tested against a standard periodically). As a general precaution, replace all reagents more than one year old, or at the beginning of a new testing season. When added to water, will turn sample to pink if free chlorine is present
