Natural Chemistry 90125APL 2-3/4″ AquaPill 75 Winter Pill 15k Gal.
Floats under your winter cover all season.
Natural Chemistry 20701PRO Pro Series Stain and Scale Control 1 Gallon
Does not add phosphates like most other stain and scale products.
Natural Chemistry 20501PRO Pro Series Phos Remove 1 Gallon
Can be used as a maintenance product to keep phosphate levels near zero.