Help with Green water

[blacknoir]

I'm not sure what's going on here. Can you visually tell if the cause is algae? I don't see anything on the pool liner that looks like it, it seems like the water is just green. Here's what I have done to this point:

1. Filled pool
2. Added salt
3. I remember for a day or 2 it did seem green but it eventually cleared up with nothing but salt in the water
3. Realized salt test strips were wrong and purchased taylor salt test kit
4. Salt test says I have 2x too much salt
5. Remove 1/2 water
6. Fill, circulate and re-test
7. Salt level is good now so I finally turned on my SWG
8. Water turned green, I think it was the day after filling
9. I used the SWG to shock yesterday with no changes today

 

[JohnT]

What are your chlorine and CYA levels?

Any metals in your fill water? Sometimes the yellow from iron combined with the blue liner can make the water look green.

 

[blacknoir]

I just tested and got this:

FC=13.5
CC=.5
CYA=70

Do I have to take a sample to a pool store to check for metal? What I don't get is why it cleared up the first time but not the 2nd.. frustrating.. my kids want to swim in it!

 

[JohnT]

I would let my kids swim in it as is. It might not hurt to rinse their suits in tap water when they get out.

Is your chlorine level fairly stable?

What is your water source? A pool store can test for metal, but you may have to look for one that does and tell them you want to test for metals. If they recommend a sequestrant, go with one as recommended in pool-school/metal%20stains

 

[blacknoir]

I've only had chlorine for about 5 days now so its hard to say but it seems pretty stable.

Water is city water. We did have a bunch of rain a few days ago though too.

 

[jblizzle]

Looks like metal to me as well:
pool-school/metal%20stains