Works with Sta-Rite Max-E-Therm Pool Heaters. View more great items. Leisure Time Spa 56 Chlorinating Granules 5 lb (E5). Flippin’ FROG Mineral and Chlorine Sanitizer for Soft-Sided Pools. PoolRx+ Blue Mineral Unit for 7,500 to 20,000 Gallons (331001). This listing is currently undergoing maintenance, we apologise for any inconvenience caused.