Sirona™ Simply Sanitizer 16 fl.oz sauna thermometer Hot Tub Filter is the

Hot Tub Filter is the replacement filter for the following Tropic Seas models:

Freshwater™ pH / Alkalinity Up raises the total alkalinity levels and the pH in your spa water to increase the effectiveness of your sanitizer as well as reduce the chance of equipment corrosion

Blue Top and Bottom

Total Alkalinity is the foundation of balanced water

it can be found here

Sirona™ Simply Sanitizer 16 fl.oz sauna thermometer Hot Tub Filter is thePLEASE READ: AS PER PA DOT REGULATIONS, THIS ITEM IS CONSIDERED HAZMAT AND CAN'T BE SHIPPED. This item cannot be ordered in our webstore due to shipping restrictions. The Sirona Simply Sanitizer is the third step in the Sirona Simply 3 Step System. This product sanitizes the water as well as protects against staining and discoloration due to metals. Sirona Simply Sanitizer is to be tested for weekly but not added weekly (unless it reads low on the