ok I have some info I can provide. the pool is 15,000 gallons. we used htc algae guard 3x concentrate. listed is alkyl 15% alkyl 15% inert ingrediants 70%

the chlorinating granules are 47.6% calcium hypo and 52% other. per you stated these are bad and we will not use these anymore

the tablets are 99.7% trichloro s triazinetrione