green pool help ? first timer

What is the pH?

Starting day 5/25/2015 INTEX AGP 24'x12'x54" 8,400 gal, with salt and borax, INTEX 3,000 GPH pump with 16"sand filter, WM Hayward Skimmer, Intex SWG CG-28669, 1 1/2" hard plumbed PVC, Lil' Shark Vacuum With Leaf Canister, TF100 test kit, speed stir, K-1766 Taylor salt test
 
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Starting day 5/25/2015 INTEX AGP 24'x12'x54" 8,400 gal, with salt and borax, INTEX 3,000 GPH pump with 16"sand filter, WM Hayward Skimmer, Intex SWG CG-28669, 1 1/2" hard plumbed PVC, Lil' Shark Vacuum With Leaf Canister, TF100 test kit, speed stir, K-1766 Taylor salt test
 
Start bringing the pH down- it could be higher- so aim to bring it down to 7.5. Use Poolmath at the top for the amount to add. Test 1/2 hour after adding MA and if it is still reading high (i.e. 8.2) repeat. If you are getting a lower reading then you can aim for 7.2 to prepare for the SLAM. You need to get this right first then you can deal with the CYA before then SLAMing.
 
HI there

You need to lower that PH to about 7.2 before SLAM. Used pool math to tell you how much muratic acid to use to lower it. To proceed with SLAM, you'll be spinning wheels losing chlorine to sunlight if you don't bring your CYA up to the 30ish range first. You can buy that at Walmart sold as stabilizer usually. Look for no less than 99% Cyuranic acid on active ingredients. Put it in an old sock and tie in front of a return to dissolve. Or......I've been known to tie them to pool noodles. Just understand that agitating that sock will help the granules dissolve. You really don't want those granules sitting on your pool floor which created the sock method.
 

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I will assume that you have the necessary CYA and start the slam right now...

Starting day 5/25/2015 INTEX AGP 24'x12'x54" 8,400 gal, with salt and borax, INTEX 3,000 GPH pump with 16"sand filter, WM Hayward Skimmer, Intex SWG CG-28669, 1 1/2" hard plumbed PVC, Lil' Shark Vacuum With Leaf Canister, TF100 test kit, speed stir, K-1766 Taylor salt test
 
Keep testing for FC every hour or two to maintain the slam level for FC, until it hold the value, then you can test less often, and brush every time you can

Starting day 5/25/2015 INTEX AGP 24'x12'x54" 8,400 gal, with salt and borax, INTEX 3,000 GPH pump with 16"sand filter, WM Hayward Skimmer, Intex SWG CG-28669, 1 1/2" hard plumbed PVC, Lil' Shark Vacuum With Leaf Canister, TF100 test kit, speed stir, K-1766 Taylor salt test
 

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