Can really high chlorine levels damage pool equipment?

dswansonsb

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Bronze Supporter
Aug 24, 2013
20
Santa Barbara, CA
Pool Size
17100
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Started the SLAM process yesterday and messed up with my ounces to gallons conversation and ended up putting twice as much chlorine in the pool than I intended? Will 60 ppm free chlorine damage my pool equipment (variable speed pump & quad DE filter)? What about solar pool heater? Pool is in ground plaster. Should I add a chlorine neutralizer? If I do should I be worried about the sodium in Leslie's Chlor Neutralizer (sodium sulfite)?

My numbers prior to the chlorine addition :

pH 7.3
TA 100
CYA 50

Thanks,
Dave.
 
Dave, hi and welcome to TFP! :wave: This isn't the way we're suppose to meet - crisis situation. :brickwall: Still, I suspect on this rare occasion you will be fine. Very high chlorine levels (with NO CYA protection) can cause metal corrosion, but should not affect plastic. You have a healthy dose of CYA so that certainly helps. Chlorine really isn't an issue for copper at levels you might encounter in a pool, and with your CYA, chlorine levels can be dramatically higher and you still won't have any corrosion. Still, you don't want to make a habit of it right? :p

Let the sun do its job and burn it off. The excess FC should decrease fairly rapidly.

Oh, and just some "FYI" about reducing FC from another resident expert:
I would suggest first turning off the SWG if you have not already done so. As for lowering the chlorine level in a hurry, either in a pool or in a spa, one can use a chlorine neutralizer (sodium thiosulfate). Alternatively, you can use hydrogen peroxide (especially for the spa since the quantities are far lower) where a 3% hydrogen peroxide solution neutralizes approximately the same volume of 6% bleach. So to neutralize 10 ppm FC in 10,000 gallons, it would take around 26 cups (1.6 gallons) of 3% hydrogen peroxide in 10,000 gallons or about 1 cup in 350 gallons. You can get stronger hydrogen peroxide for the pool, though usually one just uses sodium thiosulfate instead at a rough rate of 2.6 ounces weight of sodium thiosulfate to lower 1 ppm FC in 10,000 gallons.
 
Thanks for the reassurance Pat. I didn't add any neutralizer, the sun came out (it's been foggy and didn't see the sun at all yesterday), and the chlorine level has come way down. :)
 
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