Dark Green Pool Shocked 2x now white dust on bottom

[jstarkey]

Opened a pool two weeks ago. The pool is fiberglass with a sand filter its only two years old and holds 20k gallons. The pool water was extremely green when I opened the pool, dark green. I have shocked the pool twice with cal-hypo which got rid of algae and green color, but now the water is cloudy and there is white dust on the shallow end steps. You can see shallow end bottom but not the deep end. Please help

 

[thetekgeek]

Read this and follow it to the letter - SLAM - Shock Level and Maintain

Do you have a good test kit with fresh reagents?

 

[jstarkey]

Yes. Chems are in balance.

 

[Donldson]

We do enjoy seeing balanced numbers, any chance we could get a peek at them?

How many pounds of cal-hypo did you add in total between the two doses?

 

[jstarkey]

8lbs initial then 6 lbs. Pool was dark green with algae. 1.2 CL 7.4 PH ALK 90 Cal 230

 

[Bperry]

1.2 CL

Chems are not in balance. What’s the CYA level?

 

[jstarkey]

50 CYA. The chlorine at 1.2 is 36 hours after last shock.

 

[Bperry]

50 CYA. The chlorine at 1.2 is 36 hours after last shock.

Refer back to post #2 for the SLAM process.