Tetra 77188 Algae Control Treats 36000 gallons, 101.4-Ounce

I have converted my 40,000 gal swimming pool into a large goldfish and turtle pond. I grow water plants on the steps. The main problem I have is with a thin dark green coating of algae on the pond (concrete) walls and the floor. The water is slightly cloudy, but has no floating algae on the top. Right now, when I v…

What chemicals are in this product? I cannot read the label of the active ingredients.

What's the concentration of the active ingredient?

How long on average does it take to start working? Our pond is 125 gallons and pretty green right now. There's no visible string algae.