another black algea problem

[kingcoota]

Here are the active ingredients of Super algea guard

Active Ingredients
Alkyl dimethyl benzyl ammonium chloride, 30%
Alkyl ethylbenzyl ammonium chloride, 30%
The remaining parts are inert ingredients, 40%

[Watermom]

Nope. Don't use it.

The only algaecide we recommend is Polyquat 60% --- ingredients will say: poly [oxyethylene (dimethyliminio) ethylene (dimethyliminio) ethylene dichloride]