mwsmith2,

I am located in north east texas (near Longview) and I know what you mean about the recent heat. My water temp is now 90.

I also always get mustard algae (for 10 years now) but it has started a little early this year. I'm very interested in hearing more about this borax trick your experimenting with.

I did a search on borax here to try and find out more about using it for an algae preventer but I didn't find a lot of information. How do you test for borax PPM? You mentioned some test strips for this, where did you get those?

My pools PH always seems to want to run on the high side. Would this prevent me from running that much borax in my pool, since borax raises PH?

Thanks