Slam or No?

mhk.kohler

Member
Aug 28, 2018
18
Uniontown, OH
Trying to determine if a slam is needed. Complete refill on the pool water (well water with an ecoone filter on the hose) after replastering. Spouse says we should slam, I think no.

FC: 1
pH: 7.5
CYA: 0
CC: 0
CH: 175
TA: 200

Definitely need to increase the chlorine & CYA, but is an actual slam necessary if water is less than a week old?

Thx.
 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
22,820
Bedford, TX
M,

I see no reason to SLAM, but I would use liquid Chlorine and get the FC up to 5 ppm and the CYA up to 30 or so..

I would then do an Overnight Chlorine Loss Test or OCLT.. I'd only do a SLAM if you fail the OCLT..

Thanks,

Jim R.
 
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Dan Morrill

Well-known member
Jun 8, 2020
68
London Ontario
Pool Size
23000
Surface
Vinyl
Chlorine
Liquid Chlorine
Once CYA and FC are up, as you stated, you can perform an OCLT and see if anything is eating your FC in the new water just to be sure. My guess is probably not, but the OCLT will let you know if anything is growing in your new water.
 
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