All season I have been struggling with an algae filled pool! I am in the military and travel often and have only a few weeks home followed by a few weeks away. I do all the pool maintenance myself and typically slam using only Bleach and sometimes shock packs bought from CostCo. This year has been frustrating, I have been successful each time at clearing the pool for a week or two, but usually I leave (or get very busy at work) and the an algae bloom occurs within just a few days.
Most recently I had the pool clear and was leaving for 2 weeks. I shocked the pool to about 15 ppm before I left (with around 60 CYA) in the hopes that would keep the chlorine up until I returned. It did not, I returned to no chlorine and the pool is again full of algae.
I live in Lemoore, CA (the central valley) and the pool season is nearly over. I have not drained this pool since we first filled it when I bought the house 6 years ago (the pool is about 9 years old). There is some calcium deposit on the tile that I really want removed at some point.
Should I drain and acid wash? I have more time on my hands now and think I can finally commit to rejuvenating this pool in the best way possible. I intend to replace the SWG cell that quit working ~3 years ago to help sustain chlorine during the stints when I am away. I will likely own this house for another 5-10 years and realize the acid wash may reduce the life of the plaster. I really only want the tile (and a little bit of rock) cleaned up. I know I could bring the pool back with SLAMing and some hard work but I thought that draining every few years might be a good idea.
Thanks in advance for your help!