I'm wondering about something, and since Sissy is on this thread (along with others about this issue) I'm going to ask it here.
I had algae really bad in February, when it got so darn warm (70's and 80's). I was totally frustrated, and heard that perioxide would help kill the algae. Well, I finally tried it and yep, it killed the algae. I mentioned using the peroxide at my pet store (they are really good about all types of pets, including ponds and all types of fish) and both the owner and his top employee shook their heads and said "don't use it!" I said I already had, and they said that peroxide WILL kill algae ... it will also kill other plants (although it did not kill any of my plants that were already growing that I can tell) and most importantly, it will kill the good bacteria that may have been growing.
Now, I'm wondering if that is the reason my ponds are murky, taking them so long to cycle and get the beneficial bacteria up and going. I bought a total of 4 quarts, poured them in on the edge of the pond where the string or carpet or angel hair algae was growing and it has not come back, so I'm happy about that. Just wondering if that may be my problem with the suspended stuff in the water, causing it to be very cloudy.
Any thoughts, you pond pros out there?!