After the re-plaster we developed big streak marks that looks like white paint was spilled. I've noticed that it started to get more and more noticeable after continuously adding acid to keep the ph balanced. They came and tested the marks to see if it was scale and determined that it was part of the plaster. Now they want to have the ph kept at 0 for a couple of days to whiten up the rest of the pool. Is this the correct method of fixing this problem? They are bringing in their own pump to circulate the pool btw. I'm also concerned that it it will either:
1. mess up the rubber gasket on the light
2. eat through the 25 year old pvc piping
3. And/or proportionally make the streak marks whiter compared to the rest of the pool
1. mess up the rubber gasket on the light
2. eat through the 25 year old pvc piping
3. And/or proportionally make the streak marks whiter compared to the rest of the pool