We are in year 3 with our pool. The first year we had no problems. We used shock n swim and chlorine tabs, nothing else.
Last year though it turned brown. It was clear to start with but when I shocked it, it turned brown. We have well water with iron it so I was told to keep the chlorine low and add HTH metal control.
That cleared it.
Yesterday we finished filling the pool for this season. The water was clear. Instead of starting with shock and swim I did the Metal out first.
Now the water is green and you can't see the bottom of the pool.
What do I do next? ?
The ph, chlorine and CYA all show low.