HELP! Pool turned green and I can’t get it back to clear.

Sep 8, 2015
43
NJ
Pool Size
20000
Surface
Vinyl
Chlorine
Liquid Chlorine
FC 16
TC .5
PH - 8.0
AKALINITY - 50
CYA - unknown, probably low or none, out of test samples liquid
Filter on for 3 days in a row now, pool is still green after I came back from a week’s vacation trip.
 

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Last edited:
What test kit?

CYA?

pH test is not valid when FC is over 10.
 
- Can you post some pics of the water?
- What is your current CYA?
- Are you on a well?
- Anything unusual happen lately to explain the change? Odd weather?
No well. Nothing unusual, just lazy and neglected before I left for vacation. It was a little green before I left, didn’t expect it to go this green after a week, lesson learned to dump shock in it before I leave next time. CYA unknown because I’m out of the test kits for CYA testing, but I’m sure it’s low if any at all.
 

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Get new CYA reagent and keep feeding your pool chlorine.

Water will clear up in time but you need to get the correct FC/CYA ratio.
 
No well. Nothing unusual, just lazy and neglected before I left for vacation. It was a little green before I left, didn’t expect it to go this green after a week, lesson learned to dump shock in it before I leave next time. CYA unknown because I’m out of the test kits for CYA testing, but I’m sure it’s low if any at all.

Did you watch that video? You live in the area where this is happening.
 

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Follow the SLAM Process

Pick a spot or two in your pool and take a pic about the same time every day. See if the water color is changing.

It can take a week or more to clear up an algae problem.
 
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