I have a calcium scale issue, probably self-imposed. I know the real answer is to drain and acid wash it.
Over the years, my plaster has gotten rough. This year a month before opening, I decided I was going to test the water and fix it. The water was a little green already (mesh cover). The calcium was low 140 if I remember right and I added 12 pounds of Calcium. 6 pounds a day for 2 days. The cover was on and the pool was not running.
When I opened the pool there was a thin layer of algae on the floor. I shocked, put in the Polaris and added another 12 pounds of calcium.
At that point I feel like I could just brush the algae off. In fact, I did on the top of the steps and they are clear. Also I spelled my name in the algae by wiping it clean. My name is now written in dirt/scale.
Flash forward to 5 days later my pool is crystal clear but it looks like there is dirt on the bottom. I think it is algae so I raise the chlorine level to 15 to 20 for 7 days.
Flash forwarded to 20 days later and the pool is probably 40% better than it was, but still half covered in the stain.
There is also a dust on the bottom of the pool that I brush around. I initially thought it was DE powder, but now I'm not so sure it is not calcium dust.
I tested a spot with ascorbic acid, no change.
I tested a spot by pouring muriatic acid down a PVC pipe, it came clean.
I have a water line stain under the tile, but not much on any other verticle surfaces.
When I opened my pool the PH was around 8, AL was around 70.
My current readings are PH 7.2, CLorine 6, AL 90 and Calcium 200 CYA 40.
Did I cause this mess by dumping in Calcium?
What am I shooting for to dissolve the Scale?
What else should I be doing?
Someone should invent an underwater acid washer like a rug cleaner to acid clean pool underwater without adding much acid>
Over the years, my plaster has gotten rough. This year a month before opening, I decided I was going to test the water and fix it. The water was a little green already (mesh cover). The calcium was low 140 if I remember right and I added 12 pounds of Calcium. 6 pounds a day for 2 days. The cover was on and the pool was not running.
When I opened the pool there was a thin layer of algae on the floor. I shocked, put in the Polaris and added another 12 pounds of calcium.
At that point I feel like I could just brush the algae off. In fact, I did on the top of the steps and they are clear. Also I spelled my name in the algae by wiping it clean. My name is now written in dirt/scale.
Flash forward to 5 days later my pool is crystal clear but it looks like there is dirt on the bottom. I think it is algae so I raise the chlorine level to 15 to 20 for 7 days.
Flash forwarded to 20 days later and the pool is probably 40% better than it was, but still half covered in the stain.
There is also a dust on the bottom of the pool that I brush around. I initially thought it was DE powder, but now I'm not so sure it is not calcium dust.
I tested a spot with ascorbic acid, no change.
I tested a spot by pouring muriatic acid down a PVC pipe, it came clean.
I have a water line stain under the tile, but not much on any other verticle surfaces.
When I opened my pool the PH was around 8, AL was around 70.
My current readings are PH 7.2, CLorine 6, AL 90 and Calcium 200 CYA 40.
Did I cause this mess by dumping in Calcium?
What am I shooting for to dissolve the Scale?
What else should I be doing?
Someone should invent an underwater acid washer like a rug cleaner to acid clean pool underwater without adding much acid>
