PermaGuard Solid Vinyl Rectangular Safety Pool Cover 20 x 41 Feet With Drain BTUs_250k-299k it is too alkaline and

it is too alkaline and causes scaling

universal design and superior durability

each when filled with water

PacFab and Waterway 12 inch main drains with 3/4 or 1 inch deep existing frames

Phenol Red

PermaGuard Solid Vinyl Rectangular Safety Pool Cover 20 x 41 Feet With Drain BTUs_250k-299k it is too alkaline andThis Meyco pool safety cover is designed to fit a Rectangular 20 x 41 Foot Pool. The actual cover will arrive larger to give you enough overlap around the entire pool for proper installation and use. Meyco's PermaGuard Solid Safety Covers feature an ultra strong and ultra light vinyl material; almost 1 3 lighter than other vinyl materials. The PermaGuard material is designed to form a more effective barrier to prevent surface water and foreign debris