Do I have a problem...

Pool in Carolina Blue

0
LifeTime Supporter
May 28, 2007
52
Palm Springs
Pool Size
15000
Surface
Plaster
Chlorine
Liquid Chlorine
Good morning. I just recently bought a house which has a new pool. I used to own a home that had a pool so I participated on this forum probably 15 years ago and used the BBB back then. I bought a Taylor K-2006 and have been testing regularly. My current issue is water color. Please see the attached pictures of a section of the pool. The night time picture from last night and the daytime picture from this morning. As you can see, the night pic has a green tint which is very visible from the pool light. The daytime pic does not show that coloring at all. When I first noticed this a few days ago I thought algae so I did a SLAM and raised my CL to 24 (CYA is 60) and kept it there for 24 hours. There was some CL usage but not a lot. After a day and no change to the night color, I did the OCLT and FC did not change overnight and there was no CC. My current numbers are:

FC: 15
CC:0
pH: 7.8
TA: 80
CH: 225
CYA: 60

I have not tested for metals as it was something I did not need to do years ago. I have not added any sort of algaecide but that doesn't mean that the prior owner did not. Could this be what is causing this green tint color? Again, I do not see this color at all during the day.
 

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