Arctic Pure
Arctic Pure | Onzen Sea Salt Blend
Arctic Pure | Onzen Sea Salt Blend
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Arctic Pure Onzen Sea Salt Blend is the replacement salt for Arctic Spas equipped with the Onzen or Spa Boy salt water systems. It's a high-purity blend made for spa electrolysis cells — it dissolves clean, without the anti-caking agents and impurities in water-softener or pool salt that coat electrode plates and shorten cell life.
Why the right salt matters: Your Onzen or Spa Boy generates sanitizer by passing current across titanium plates. Anything else dissolved in the water — iron, additives, filler — ends up on those plates, and fouled plates mean weaker chlorine output and earlier cell replacement. A purpose-made blend is the cheapest protection your salt system can get.
How much to add at a fresh fill:
- 7' spas — about 2 kg (one 2 kg container)
- 8' spas — about 3 kg
- 10' spas — about 4 kg
- 14' swim spas — about 12 kg
Add the salt with the pumps running and give it a full circulation cycle to dissolve before trusting the salinity reading.
Topping up: salt doesn't evaporate — it only leaves the spa through splash-out, filter rinsing and draining. Only add more when your system reads low, and top up gradually, retesting as you go.
Quick tips:
- Never substitute water-softener, road or pool salt — the additives damage cells
- If salinity reads low right after dosing, wait for full circulation before adding more
- Salt systems drift pH upward — keep Salt Water Balance on hand
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