Hi. I'm new to the forum, but have been reading all the good information here for a couple of weeks. This is definately the best site I've seen.
We've had our pool a little less than 2 years, and for most of the last year have been fighting patches of algae in the pool. The water was never green, but just couldn't ever permanently get rid of small numerous green algae patches around the sides and bottom, and particularly around the rock feature. I now realize the problem was that all our attempts at shocking the pool were insufficient. I shocked the pool over the last week based on the advice here, and it looks good now. Before shocking:
FC = 0, CC = .5, CYA = 50, pH = 7.8, TA = 80, didn't measure CH
FC = 3.5, CC = 0, CYA = 40-50 (hard to tell), pH = 7.2, TA = 100, CH = 620
I plan to raise the pH to about 7.5, but obviously the problem is the super high CH.
I have read through the pool school and have decided that the BBB is the way to go but for the recent shock mostly used Leslie's Power Powder Plus since it didn't seem to have a stabilizer in it and I had already purchased it. Bad decision. In hindsight I'm sure this plus all the earlier shock attempts using the same product really raised the CH.
Is there any other solution other than significantly draining the pool? Is there any other way to soften the water? So far there has not been a problem with any scaling. Will it take a while before this will effect pool equipment? I'm wondering if I can let it lower over time as we get rainfall.
I checked my local water supply and the CH is about 150 ppm.
Thanks for any advice.