Pool won't hold chlorine and all other levels seem good

Chlorinating, maintaining the right chlorine levels,
chlorine problems. Dichlor, trichlor, cal hypo, bleach,
granules, chlorine pucks and chlorine sticks.
mckennadaniels
Pool Newbie
Pool Newbie
Posts: 1
Joined: Thu 17 May, 2012 08:31
My Pool: 39,000 cartridge filter system

Pool won't hold chlorine and all other levels seem good

Postby mckennadaniels » Thu 17 May, 2012 08:38

My pool won't hold the chlorine. I shocked once when still cloudy, it cleared up, and have just had in tablets since. But stick reads nothing for free chlorine and total chlorine.
From stick (so not super accurate), levels are:
hardness: 250
Both Chlorines : 0
pH: 8
Alkalinity: 120
Cyanuric acid: 50

Ideas?


Guest

Pool won't hold chlorine and all other levels seem good

Postby Guest » Thu 17 May, 2012 17:29

You might be using a Non-chlorine shock or rapid shock. Check the active ingredient if its a chlorine shock it will say the available chlorine % right below the ingredient.
chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

Pool won't hold chlorine and all other levels seem good

Postby chem geek » Fri 18 May, 2012 05:42

Get yourself a proper test kit, either the Taylor K-2006 or the TF-100 and use The Pool Calculator to calculate dosages. Shocking is not a one-time event, but maintaining an FC that is 40% of the CYA level until you pass the overnight chlorine loss test and other criteria. You should read The Pool School , especially the article on how to shock your pool.

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