4-in-1 formula kills and controls green, black, and yellow algae growth, is non-foaming, and 60% strength. Swim immediately. Active ingredients: Alkyl dimethyl benzyl ammonium chlorides 30%, alkyl dimethyl ethylbenzyl ammonium chlorides 30%, other ingredi.
Hth algae guard 30 is a concentrated, non-foaming algaecide product
When used regularly, will prevent and kill the growth of green, black and yellow algae
4-IN-1. 60% Strength. Kills & controls green, black and yellow algae. Non-foaming. Swim immediately. Compatible with Salt Systems