+ Home » + GENERAL » + Pool Pictures » + free chlorine      Next Topic   advanced Posted:  #21644 Anonymous User       Subject: free chlorine I have this problem with my pool. I am unable to bring the free chlorine level up. ph is good and so is all of the rest, I add a lot of chlorine and i get a high total chlorine level but the free chlorine just stays low. what do i do? Reply Posted:  6/23/2008 1:06 PM #21645 chem geek Member Total Posts:854 Last Post:10/25/2009 Member Since:12/12/2006 Did you just recently open your pool after having it closed over the winter and did not have chlorine in it previously? If so, then it sounds like you've got ammonia in your pool. Get an inexpensive ammonia test kit from a pet/fish/aquarium store. You will need a cumulative Free Chlorine (FC) amount that is 10x the ammonia measurement. So if you measure 3 ppm ammonia, this will take around 30 ppm FC to clear. The chlorine does not need to be added all at once -- it's a cumulative amount. Richard Reply Posted:  3/6/2009 12:07 AM #21646 Aquaclear-NZ Member Total Posts:2 Last Post:3/9/2009 Member Since:3/6/2009 You could also have a high level of chloramines - after a 0.5ppm difference between free and total chlorine this can cause a problem Oxidise with a percarbonate product with a good active oxygen content Reply Posted:  3/8/2009 5:29 PM #21647 orenda Member Total Posts:624 Last Post:6/8/2009 Member Since:6/30/2005 Have your pool water checked for phosphates. If above 500 parts per billion, apply a phosphate remover sufficient to remove the phospahte level to zero and recheck your free chlorine level the following day. Orenda Reply Posted:  9/21/2009 11:57 AM #24862 atlantispoolchemicals Member Total Posts:1 Last Post:9/21/2009 Member Since:9/18/2009 If you live in the UK, you could try our range of advanced chemicals for those perfect results. www.poolspachemicals.co.uk Reply Posted:  10/9/2009 11:05 PM #24896 greenmatter Member Total Posts:7 Last Post:10/9/2009 Member Since:9/21/2009 thanks for the info H2O Lover! :) Reply Jump to: CHEMISTRY: Pool Chemistry Problems EQUIPMENT: Pool Equipment Product Reviews EQUIPMENT: Swimming Pool Equipment Problems GENERAL: Fun Pool Stories GENERAL: General Pool Forum GENERAL: Indoor Pool Owners Forum GENERAL: Pool Pictures GENERAL: Tech Row STRUCTURE: Swimming Pool Structural Problems        Next Topic