4 Pack Intex Purespa Hot Tub Filter S1 Reusable Foam Biofoam

Four pack of Biofoam filters to fit Intex Purespa hot tubs. Will wash and can be reused giving far longer life than the standard S1 Intex cartridges which we have found regularly give E90 error codes. These filters have been tested in our hire tubs and give far superior water quality and no error codes in comparison. It is very important that your water is not over chlorinated as the foam will decompose, always remove filter when using a chlorine shock treatment (not necessary to remove when using a non chlorine or oxy shock treatment). Filter works perfectly when correct chemical levels are maintained in your tub.