I moved from NH to SC and built a inground pool and now the pool store says I have mustard algae.
What I have seems like a fine very light gray pile of dirt.. They said if I push it with my brush does it become like a cloud or just moves with the brush.. Well it becomes a cloud so they say it's mustard Algae..
So I did what they said and added their chemicals and shocked the living daylights out of it and after three days and after vacuuming the pool to "Waste" the next day I still have piles of that stuff here and there..
This is the reading from the pool store for my water..
FC OVR 15.06
Total OVR 15.54
Cyanotic Acid 71
Help please and Thanks