I purchased a foreclosed home last year and decided to get the small 10,000 gallon backyard pool relined and open it this year. While I do not have any major aesthetic problems (yet) I am having a difficult time maintaining a proper chemistry - mainly lowering the TA, maintaining steady FC levels, and introducing CYA to the water. First, here are my current numbers (as per the 6way HTH test kit from Wal-Mart):
FC: 3ppm (I just added a gallon of HTH Liquid Sodium HCL 10% about 90 minutes ago, FC will be at 0 in 2-3 more hours as it is 89 and sunny today in Northern Indiana)
PH: 6.8 (I just added 1gallon of 31.45% Muriatic Acid to deal with my high TA 90 min ago, before this PH was at 7.5)
TA: 240 (in lieu of the 1 gal addition of Muriatic acid which sent my PH spiraling downward)
CYA: 0 (I use a floater full of 1" HTH Trichlor tabs which I thought would increase CYA while decreasing TA - after 1 month neither have happened)
About a week ago, the water had become cloudy and I could feel, but not see, algea beginning to grow on the sides. I scrubbed, vaccumed, shocked and used a clarifier and there is no more film and the water is crystal clear. Since then I have been adding 1 gallon of 10% chlorine daily and water has remained crystal clear and no algae is detectable. I want to know how to bring my chemistry to proper levels and increase the lifespan of my chlorine.
I have never owned a pool before, so any info is appreciated! Please let me know if I can provide any more information.