Free chlorine higher than total chlorine?

Chlorinating, maintaining the right chlorine levels,
chlorine problems. Dichlor, trichlor, cal hypo, bleach,
granules, chlorine pucks and chlorine sticks.
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rhthompson
Pool Newbie
Pool Newbie
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Joined: Mon 21 Sep, 2009 14:11
My Pool: inground gunite 30 feet long 20+ years old
Location: tennessee

Free chlorine higher than total chlorine?

Postby rhthompson » Thu 16 Sep, 2010 13:39

aquacheck 5 test strips indicate my free chlorine is 10 ppm (purple color on test strip) while total chlorine is around 2 ppm (pale green). How can this be? Seems like free would always be lower than total.

thanks


lbridges
Swimming Pool Pro
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My Pool: Geometric 16K gal shotcrete w/exposed aggregate; Pentair EasyTouch w/wireless, 2 Intellibrites, VS-3050 pump, C&C 200 Filter, IC-40 SWG; Heliocol solar. Rocky's reel
Location: Space Coast, Florida

Free chlorine higher than total chlorine?

Postby lbridges » Thu 16 Sep, 2010 15:05

Your opinion is correct, Total chlorine (TC) must equal free chlorine (FC) plus combined chlorine (CC). One reason many people ultimately abandon test strips.

There are two test kits generally thought to be good from the homeowner - the Taylor K-2006 and the TFTestKits TF-100
Allen G Myerson

Free chlorine higher than total chlorine?

Postby Allen G Myerson » Thu 16 Sep, 2010 17:54

Dump the strips. Get the Taylor K-2006 test kit.

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