Outdoor pond..approx. 40x60 and 2 feet deep(with fish and turtles).....filled with string algae for first time in 40 years. Can we use hydrogen peroxide to correct this without harming animals? How much peroxide and should we rake out as much old algae as possible before treating? Any information regarding cause, cure, and prevention is greatly appreciated. Thank you so much!
I am not sure if peroxide is the first step I would recommend as it may make a plastic pond liner brittle. Try the following remedy first from Bob Souvestre:
Thanks for your question,