Hi all, I was wondering how to properly shock or "SLAM" my pool. It is a 18x37 inground vinyl liner pool that I'm estimating around 27400 gallons. I have been putting 3 bags of leslies "chlor brite" (http://www.lesliespool.com/leslies-c...nular-bags.htm) to shock it and I was wondering if this is more than necessary or too little or even the right thing to use. If it is based off of the target FC level for shocking that I want, then how soon after putting it in do I take the sample to compare it to the target number? I'm having an issue keeping my target FC level because my CYa is around 20-25 and is in direct sunlight all day and I only have a floater with 3" pucks in it until I can install an automatic chlorinator. Any advice would be great, thanks for looking.