Adding chemicals, vacuuming, backwashing,
brushing, filter care, filter cleaning, replacing
worn or broken pool parts
Pool Newbie
Pool Newbie
Posts: 1
Joined: Fri 10 Jun, 2011 23:18
My Pool: 20,000 gallon kidney shape inground
Location: oklahoma


Postby ghostrider » Fri 10 Jun, 2011 23:28

how often should i use shock?

chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California


Postby chem geek » Sat 11 Jun, 2011 03:04

If you maintain an appropriate Free Chlorine (FC) level for your Cyanuric Acid (CYA) level, then you never need to regularly shock the pool. Read the Pool School for more info.

If on the other hand you are using stabilized chlorine, such as Trichlor pucks/tabs in a floating dispenser or an inline chlorinator, then you may need to shock once a week to make up for the low active chlorine level as the CYA builds up over time, though eventually even shocking may not be enough unless you have a lot of water dilution.

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