Lake Advisory: Lake 2 Fluorescent Green Algae Blobs

Dear Friends of the Lake: During the past several weeks, strange fluorescent green algae blobs have been showing up in Lake 2 in large numbers. We contacted well known lake consultant Steve McMcomas (Blue Science Inc.) to help identify the problem and here is what his assessment is: "Those fluorescent green globs are filamentous algae.  The species in 2nd lake is a non-toxic green algal species.  It has a slimy gel-like appearance.  It is going to be around for most of the summer. Occasionally it will rise to the surface and float as well." "This is a natural outcome of slightly improving water clarity. Nutrient (phosphorus) pulses are not the probable cause.  This type of algae growth will likely occur in the future and in some years may be worse than other years.  Zebra mussels are clearing the water allowing better sunlight penetration which stimulates the algae growth. The algal cysts have been present in all 3 basins for decades, and will grow when all the right conditions come together.  Sounds like conditions are favorable in 2nd lake." "The algae is harmless.  It can be treated with copper sulfate, but is difficult to control and will pop up some place else.  The life cycle is about 60 days.  It will likely be gone by August." Hope this explanation was helpful. Forest Lake Lake Association Board Steve Schmaltz, Board Member