Natural Chemistry METAL Free Purifier – 1 Liter (ltr)/33.9 Ounce (oz)

METAL Free – Deactivates Metals:Quickly and easily chelates metals (iron, copper, other trace metals) without adding any phosphates that contribute to algae growth. Not affected by pH or temperature. Prevents stains and water discoloration.1L/33.9oz treats 20,000 gallons