Directions for use:
Sanitizer level should be below 5ppm before adding this product.
New pools, openings, & initial phosphate removal:
Note: Do not backwash/clean the filter for 48 hours after adding this product.
At closing: 1. Add product to a properly balanced pool (with sanitizer level below 5ppm) at a rate of 1 bottle per 25,000 gallons. 2. For same day closing, product can be added to the pool water evenly around the edges.
Note: This product removes 300ppb of phosphates from 20,000 gallons.
For opening: Test phosphate levels weekly and treat as necessary in order to maintain phosphate levels 100ppb or lower.
For closing: Phosphate levels should be 100ppb or lower for optimal results.
This product is designed for use in properly balanced pool water.
Initial Dose: Add 1 bottle (33.9oz) per 20,000 gallons to the pool water evenly around the edge.
Weekly Maintenance Dose: Each week, add 1 capful (4 oz) per 10,000 gallons to the pool water evenly around the edge.
Note: Take caution to not spill or splash Metalfree on deck or coping. Do not use with biguanides.