Hi, I am a new user and I hope you can help me.
I have an in ground plaster pool, approx. 15,000 gallons. Cartridge filters. Hayward pump. No heater.
Last water read:
CA 55 CH 375
I have staining around walls. I have done the abscorbic stain remover test but it didn't work. The stain is like algae which has seeped into the plaster. It looks dirty. I have used algecides, stain remover but nothing is shifting it. I am having algae grow back the very next day. I have used Phos free too. Just tonight I added Algae Control from Leslies followed by 6lbs of shock to try and kill the algae. The staining could be organic or copper? I tested the stain with Jacks Magic Copper and Scale Stuff last year and it lifted but It seemed like a large project for me and I wasn't confident that I could follow all of the instructions. My chlorine does not seem to be staying in the pool although the guys at the shop (Leslies) said everything was in balance.