I've had this brown stuff in the pool, in patches, particularly along the seams, and on the sunny side of the pool - nothing on the shady side, nothing on the walls. This has pretty much been going over the past week.
I performed an OCLT test last night and the chlorine went from 8.0 to 5.5 this morning. All other test results have been normal for my pool over the past several days. Ph has stayed at 7.6 throughout the several days. Combined Chlorine was 0.5 last night and 0.5 this morning. It is almost always 0.0 or 0.5. CYA is at about 50.
Other facts:
1. I have a pool cover which is always covering the pool when we're not swimming.
2. Temps have been in the 90's here (Mpls area) for the last few days.
3. The brown stuff feels gritty, not as gritty as sand, but gritty.
4. I can move the brown stuff just waving my hand above it in the water and it will move away in a cloud of brown.
5. When I ran the Dolphin pool cleaner, the filter caught the brown stuff, and again, when I rubbed between my fingers, it had a gritty feel to it.
Thank you.
I performed an OCLT test last night and the chlorine went from 8.0 to 5.5 this morning. All other test results have been normal for my pool over the past several days. Ph has stayed at 7.6 throughout the several days. Combined Chlorine was 0.5 last night and 0.5 this morning. It is almost always 0.0 or 0.5. CYA is at about 50.
Other facts:
1. I have a pool cover which is always covering the pool when we're not swimming.
2. Temps have been in the 90's here (Mpls area) for the last few days.
3. The brown stuff feels gritty, not as gritty as sand, but gritty.
4. I can move the brown stuff just waving my hand above it in the water and it will move away in a cloud of brown.
5. When I ran the Dolphin pool cleaner, the filter caught the brown stuff, and again, when I rubbed between my fingers, it had a gritty feel to it.
Thank you.
