In midst of SLAM

mjpohl

Active member
Feb 24, 2019
41
Rogers, Arkansas
Pool Size
25000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-30
In midst of SLAM since Sat.
Had 2 overnights chlorine stayed constant.
Does Pool still have green hue...keep going?
96989

12 FC
CC-0
7.8 ph
Soon be Adding 1 quart mur acid
ALK 70ppm
CYA 40
Salt-3000ppm
 
Hello and Welcome to TFP!!

The water doesn't look green to me. Have you been brushing daily? Is the SWG off during the OCLT?
When you have algae and the perform the SLAM procedure, the green goes away and the water usually gets milky/cloudy. Then the filter has to do its job to remove the dead algae. Once it goes milky, then clear, it shouldn't have any green left. If you do see green, the the SLAM Process process should continue.
 
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If you can brush every inch of the pool and the water stays clear, you pass the OCLT, and the CC is less than .5, you're done. There should be no visible algae anywhere, not even lurking on the grout lines inside the skimmer throat.

If you're unsure, keep FC up at shock level for another day. If the algae is truly gone, you won't be losing much and it's really cheap insurance. What's another jug or two compared to 20 or 30 to SLAM it again?
 
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With your FC over 10, as in a SLAM, your pH levels can be skewed. Best to leave it and test when
you are done and chlorine drops below 10. You may have seen that the SLAM says to check and
set pH before you start the process and that is why. Great looking pool btw!
 
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