I'm not sure if this is the correct thread but the title sure hits it...
for the past 3 years I end the winter with 60 parts per million to cya
I use the trouble-free pool method for opening and closing and everything else straight bleach. nothing else.
yet every spring my cya is back to nearly zero....
I've tried reviewing all the threads but has there been any update on this phenomena over the years?
for the past 3 years I end the winter with 60 parts per million to cya
I use the trouble-free pool method for opening and closing and everything else straight bleach. nothing else.
yet every spring my cya is back to nearly zero....
I've tried reviewing all the threads but has there been any update on this phenomena over the years?