I've been following the TFP method for the last year and a half and my pool is crystal clear with lot less chemicals being used. So happy to have found this site; my dilemma is next month we'll be away from home for three weeks and I need to use chlorine tabs to keep it clear. In the past I have used BioGuard's SilkGuard Tabs, should I use these tabs or Clorox Pool&Spa XtraBlue 3" Chlorinating Tablets? Is one better than the other except the price? Thanks.