PENTAIR Acid Washing Kit For Easytouch Control Systems 520670 cotton-and-string-knit-gloves Filter Perfect™ improves filter efficiency

Filter Perfect™ improves filter efficiency and lengthens cycles between filter cleaning

Metal Free™ protects against metal staining

Hayward CX900J StarClear™ Plus Cartridge Filter and ProGrid™ C9002SEP DE Separation Tank E-Ring

looks like a collection of tiny sponges

PENTAIR Acid Washing Kit For Easytouch Control Systems 520670 cotton-and-string-knit-gloves Filter Perfect™ improves filter efficiencyPentair 520670 IntelliChlor Acid Washing Kit for Easytouch Control Systems The IntelliChlor Acid Washing Kit fits EasyTouch Control System. The IntelliChlor and iChlor Electrolytic Cell must be acid cleaned if excessive scale forms between the plates or debris is present. The kit includes O ring, coupling nut, and closed end union cap.