~ jan JJsPond.us wrote:

I wrote:
I just checked and the nice rich green carpet on the bottom of my pond

There is fuzz algae that can be up to 2" long, that is the most desirable
plant filtration you can have. So is it really string, or just fuzz?

Since my pond is spring fed, nutrient filtering is important all year
long. Is there anything I can do now or do I just play catchup in the
spring?

Probably catchup, but if you have string algae, one of the things I found
out from experience a few years ago.... I keep my ponds covered with
screening or shade cloth all fall & winter. Originally it was just to keep
leaves out, until I got the filters going full throttle again in Spring.
Going on a pond tour for a pond construction class early one spring there
was one thing those ponds had that I did not, string algae, lots of it. So
if it is feasible, perhaps shade the pond during winter? ~ jan

OK, it must have been fuzz algae because I see the string algae coming
in now and it is definitely different. My pond is a little large for a
shade cover, but I may have to solve that problem.
--
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18,000 gallon (17'x 47'x 2-4') lily pond garden in Zone 6
Cheers, Steve Henning in Reading, PA USA