Scoop with a toilet bowl brush. Don't use the chemicals . Your water garden in a pot has to cycle just like a large pond. Sandy

I stumbled on a fix for string algae this year that worked well. I was using horticultural corn meal for fungus issues in my lawn and on the bag, among the other uses, string algae in ornamental ponds was listed. I tossed half a handful into my 110 gallon container that was a string algae nightmare and within a month or so, it was gone. Certainly not an overnight fix and the real test will be the cooler temps of the winter, but it did seem to work.

Pam

But in a month, it could have gone away by itself.

Thanks for your feedback, maybe it would have gone away by itself. It is still working and I believe it helped. I have used the pull and toss method for years and haven't had to do that for months.

I'm willing to try both suggestions. I'll let you know how it goes.

Cleaning and adding fresh water just feeds more algae as you learned. It is hard to resist doing it but it is for the best.

One thing that has worked for me is hydrogen peroxide. It's effective on string algae but not the free floating type.