Certikin Spafresh 1Kg Multifunctional Mini Chlorine Tablets (20Gms) - Pack Of 6The Spafresh range contains all the chemicals necessary for maintaining and sanitising a spa or hot tub. Take a look at the Spa Fresh brochure for more details.Product documentation:chem_br_spafresh_guide-573.pdf350msdsspafreshalkalinityincreaser201013-905.pdf351msdsspafreshhardnessincreaser151113-906.pdf352msdsspafreshsurfacecleaner201013-907.pdf355msdsspafreshphreducer201013-908.pdf356msdsspafreshphplus201013-909.pdf357msdsspafreshmultifunctionminichlorinetablets151113-910.pdf360msdsspafreshbrominetablets-un3085121113-911.pdf363msdsspafreshsystemflush040213-912.pdf<a href="https://genux.fluidra.com/get-document/365