It is very possible that the green foam is the result of aeration in the presence of a high amount of dissolved proteins in the pondwater that contains a green phytoplankton bloom. Excessive proteins in the water will form suds or foam like products when the water recieves lots of aeration or air mixing into the water. If the water has abundant green algae (a bloom) on the surface and or suspended in the water column the foam could incorporate the microscopic algae cells into the foam bubbles maiking it apprear green. If the underlying water is clear or there isn't any green films on the surface (visibility 3-8ft) with no type of algae bloom then my theroy is "all wet". Send me some foam and I can verify if it contains lots of microscopic algae. If you send me a sample, send two, one with primarily the foam and one with regular pond water collected a foot or two below the foamy surface layer. Samples should be preserved before mailing. Contact me for details.
Last edited by Bill Cody; 09/01/10 09:57 AM.
