I currently use a spa pool chlorine with the active ingredient "sodium = dicloroisocyanurate" 600g/kg I have been told a may be able to use another product sold as Janola = with the active ingredient "sodium hypochlorite" 4.2% & "sodium = hydroxide" 4% Any of you chemical wizards able to tell me if this is ok to use in a = spa pool? I contacted the Janola distributor but they would only say to use as = directed which does not include spa pools. Roy :-( --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.581 / Virus Database: 368 - Release Date: 9/02/2004 -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics