Adjust TA when chlorine very, very high?

[chem geek]

Sandy,

That's great news and I'm so glad that you conquered this algae. Your tips of what you learned are also excellent.

Another alternative or even in addition to using the Polyquat 60 in August each summer as a preventative for algae would be to have 50 ppm Borates (from Borax) in your pool (at all times). We don't know yet if the Borates will prevent this particular hard-to-kill algae, but I suspect that it will be at least as good as Polyquat 60 for preventing algae plus has additional benefits of greater pH buffering (stability) and lower chlorine consumption. Apparently, Evan's got me "hooked on Borax" and I plan to add both salt (1000 ppm just for the "feel") and Borax (50 ppm) to my pool starting next spring.

Richard