Planktonic algae bloom - thick. Cause fertile soil plus dead tilapia fertilizer coupled with warm weather and wind blowing it to one side. Notice the nice colored water on the up wind side.

What is the alkalinity? For example if alkalinity was the limiting factor and it improved to the critical point (20 ppm +-) then an explosive plankton bloom can form in a few days. Same for other possible limiting factors.

Cold rain or weather can stop it but if it does you could have rapid turnover and a fish kill . Does this pond stratify in summer ? Rapid water movement would help ( boat motor for a couple hours or a circulator ). You could spray it with a light application of a contact herbicide over about 10% of the pond. Manual removal with a net (top 2 feet only) would help.


Last edited by ewest; 02/05/08 09:40 AM.