My numbers are good but I have a slight tinge of green

richierich

Bronze Supporter
Jul 12, 2013
661
Long Island, NY
Hi All - Been a TFP member for years and always follow the guidance. I have the TF100 kit and I think all my numbers are good but over the last week my pool has started to have a slight green tinge to it. I can see the bottom very clearly but when I look from one end to the other it has a bit of green to it.

I do have salt but it's been so unusually hot here the past week I've been supplementing with bleach to keep the FC high.

FC - 8
CYA - 60 if I glance at the dot and 40 if I focus on the dot
PH 7.5
Salt 3000
TA 40
 

Shirker

Well-known member
Jul 2, 2014
693
Athens, GA - USA
Pool Size
19000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Is there anyway you might have copper in the water? If you overshoot your target FC dissolved copper could cause a green tint. Do you see any staining?

Definitely do the OCLT test first though.
 
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Shirker

Well-known member
Jul 2, 2014
693
Athens, GA - USA
Pool Size
19000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
If it is algae that is making your water green, then it is in the water. Not necessarily hiding under your ladder. But if you have kept your FC up, I'm thinking it is not algae. The OCLT can help rule it out for sure.
 

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richierich

Bronze Supporter
Jul 12, 2013
661
Long Island, NY
No heater and the walls don't feel slimy. Maybe I can post a pic later this evening. I feel like it may be the ladder mat. I kind of want to forego it since it's a little green underneath but nervous that the kids jumping off the ladder will rub the liner and maybe tear it. It seems like a lot of folks use ladder mats.
 
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