discoloration

Our pool tile is discolored in patches on our spillover spa. I have tried everything to clean it and nothing seems to work. Any suggestions on how to clean and how to prevent? Thanks!

Hello TFP folks, I recently had my pool plastered with NPT's Stone scape. On the first day the pool was filled up I started water treatment. Based on my taylor's test kit results, I started by adding a good amount of muratic acid since the PH was really high. I didn't have any Alkalinity...

Hello all, I have started getting discoloration on the pool surface. It is a slow process and it seems like the surfaces where the water flows are affected. On the stairs and on the sidewalls of the spa. The pool company decided it is some kind of metal and we don’t know how metal got into the...

The guy that has the plaster part of the company that did our remodel is trying to convince me that with fresh plaster, it is a good idea to keep pH lower than normal, between 6.9-7.2. Won't keeping it that low eventually cause other issues to arise such as scaling (I can't recall if it was...