Arctic Pure | Boost (Granular Chlorine)

Arctic Pure Boost is stabilized chlorinating granules — the everyday workhorse sanitizer for hot tubs, and the most popular choice for keeping spa water safe.

How to use it: with at least one pump running, add one capful — that raises the test strip about one colour change. Keep free chlorine between 2 and 5 ppm (parts per million). Let the water circulate to mix the granules in, and stay out of the spa for at least 30 minutes after dosing.

Why "stabilized" matters: the chlorine is bound to a stabilizer that slows its breakdown, so each dose works longer before burning off — less product used over a season.

Daily sanitizer vs. weekly shock: Boost handles the routine sanitizing; a weekly oxidizing shock with Arctic Pure Refresh clears out the built-up organics so your chlorine fights bacteria instead of old body oils.

Quick tips:

• Salt-system owners: a small Boost dose after a heavy bather load helps the cell catch back up
• Never pre-mix with any other chemical — add each product separately

Available in 645 g and 1.5 kg sizes.