Hi all - so glad I found this place.

I am a new pond owner, new house base in Sept. Algae problems..



Photo 1 shows the largest pond: probably 60'x30', 5 feet deep at center. This is fed by an irrigation ditch above my property AND a few other odd ground springs. There is an overflow tube that empties out into a lower pond and into another irrigation ditch. *This pond filled in less than 2 hours once I plugged it this spring... LOTS of water flows into/out of this pond.


This shows the intake pipe where I pull water out of the pond. Note the floating plumes of algae. Yuck. Starting to clog the intake screen.


Some other green water plants growing on the bottom of the pond.

QUESTIONS:
- What chemical can I treat the pond with that will kill the algae and other water plants but be ok for my lawn via the irrigation?
- If I treat with chemical, how often to treat since the bulk of the water is constantly being replaced by the high flow in/out?
- I'd be willing to use fish instead of chemicals...what type and how do I get those? Mail order?!?

Many thanks for your help!
WYODAD

Welcome to the forum! My cousin lives in Casper, and works in Gillette (coal). I'll know later on this year if I got pulled for Mulies.

Fish: If the water is above 60°F, then pure Blue Tilapia would work. If above 75°F, then regular hybrid Mosambique Tilapia would work.

Chemicals:

Cutrine Plus liquid or granular - see here for label http://www.aces.edu/dept/fisheries/rec_fishing/documents/cutrine_label.pdf

Or Green Clean Plus or Phycomycin. http://www.archchemicals.com/Fed/ICM/Docs/Surface/Labels/Phycomycin.pdf