Thanks bama...
It has become quite trying.
The bottom has nothing in it in am so I don't know what it could be getting in at nite.
I'm going to take a break from as aggressive shocking additions cuz it is counterd with sun. I plan to keep it around 18 again through the day then pull to 24 after dusk.
I have always had the black greasy stuff. I always assume sunscreen residue.
At 7 it is daylight but not shining on pool. Tonite I will use last time it holds shock level 24 then test at 6am. Keep watch on post above to see progress. We will likely be in it this afternoon as it is obviously clean...thanks again.
It has become quite trying.
The bottom has nothing in it in am so I don't know what it could be getting in at nite.
I'm going to take a break from as aggressive shocking additions cuz it is counterd with sun. I plan to keep it around 18 again through the day then pull to 24 after dusk.
I have always had the black greasy stuff. I always assume sunscreen residue.
At 7 it is daylight but not shining on pool. Tonite I will use last time it holds shock level 24 then test at 6am. Keep watch on post above to see progress. We will likely be in it this afternoon as it is obviously clean...thanks again.