Evexon
07-13-2006, 12:52 AM
Hi all,
Long time reader first time poster, a friend turned me onto this forum 2 years ago. Since then I have been using the advice I learned here along with the PS233 to maintain a gorgeous pool. So what's the problem?
My pool looks like it has a case of the measles, little black measles, scattered across the entire underwater surface. Along with the measles the pool surface below the water has a slight brownish hue.
I tried to remove a few of these spots so I could determine the root cause, PH reducer, vitamin C, finger nail scrapping and even a scotch pad. The spots won’t budge. I am not sure what to try next. It almost seems like the spots are coming from underneath the gel coat. (I certainly hope that is not the case as any solution for that sounds prohibitively expensive.) I hope someone here can let me know what to try next. Below is the history and specs of the pool since I have owned it:
19000 gallon fiberglass pool with sand filter
Chemicals used for normal water conditioning as needed: Clorox Ultra, 20 Mule Team Borax, Baking Soda
FC 8
CC 0
pH 7.5
Alk 120
Cal 170
Cya 60
Coppper .5ppm (tested at pool store)
Iron Not Run (tested at pool store)
Year 1: No spots. Used 3” tabs for chlorination and 5 in 1 shock powder from Wal-Mart. Some minor green algae problems. (Nothing special added to address the algae.)
Year 2 (Learned about this forum): A few spots at end of year. CYA level was 130, stopped using pucks, switched to bleach. Kept Chlorine levels in the 8 – 15 ppm range due to high CYA.
Year 3 (Current year): Spots spreading. CYA level finally lowered to 60, still not using pucks. Even though this is a fiberglass pool I thought I would raise the Cal level just to see if it would help the spots. Usually Cal was 50-70 now raised to 170. (I know it doesn’t make sense but heck nothing else was touching the spots and by the way it didn’t help with the spots but I swear the water is even clearer now.)
Thanks,
Steve
Long time reader first time poster, a friend turned me onto this forum 2 years ago. Since then I have been using the advice I learned here along with the PS233 to maintain a gorgeous pool. So what's the problem?
My pool looks like it has a case of the measles, little black measles, scattered across the entire underwater surface. Along with the measles the pool surface below the water has a slight brownish hue.
I tried to remove a few of these spots so I could determine the root cause, PH reducer, vitamin C, finger nail scrapping and even a scotch pad. The spots won’t budge. I am not sure what to try next. It almost seems like the spots are coming from underneath the gel coat. (I certainly hope that is not the case as any solution for that sounds prohibitively expensive.) I hope someone here can let me know what to try next. Below is the history and specs of the pool since I have owned it:
19000 gallon fiberglass pool with sand filter
Chemicals used for normal water conditioning as needed: Clorox Ultra, 20 Mule Team Borax, Baking Soda
FC 8
CC 0
pH 7.5
Alk 120
Cal 170
Cya 60
Coppper .5ppm (tested at pool store)
Iron Not Run (tested at pool store)
Year 1: No spots. Used 3” tabs for chlorination and 5 in 1 shock powder from Wal-Mart. Some minor green algae problems. (Nothing special added to address the algae.)
Year 2 (Learned about this forum): A few spots at end of year. CYA level was 130, stopped using pucks, switched to bleach. Kept Chlorine levels in the 8 – 15 ppm range due to high CYA.
Year 3 (Current year): Spots spreading. CYA level finally lowered to 60, still not using pucks. Even though this is a fiberglass pool I thought I would raise the Cal level just to see if it would help the spots. Usually Cal was 50-70 now raised to 170. (I know it doesn’t make sense but heck nothing else was touching the spots and by the way it didn’t help with the spots but I swear the water is even clearer now.)
Thanks,
Steve