HTH Liquid Algae Guard 32 oz

HTH pool care algae guard ultra is the strongest algaecide formula. The algae guard ultra both kills and prevents even the most stubborn green, black and mustard algae. This non-foaming algae guard treats pool water for up to 90 days after applying to your pool.
Long-lasting all algae eliminator
Treats and prevents algae guaranteed
Fast-acting and effective and it is suitable for all pools
It reduce chlorine usage and non-foaming and non-staining