Wellis Crystal Active Oxygen Activator Liquid (1 L)
What it does
The activator releases the oxidising power of the active oxygen granules into the spa water, killing bacteria and oxidising organic waste. By itself it does nothing — it must be paired with the granules.
When to use
Weekly, as part of the active oxygen sanitisation cycle. Use 2–3 times per week if your spa sees heavy use.
How to use
- Test water with Crystal Pool Check 5-in-1 to confirm pH is 7.2–7.8 and alkalinity is in range.
- Turn circulation ON.
- Add the activator dose per the bottle (per 1 m³).
- Wait 5 minutes, then add the Active Oxygen Granules.
- Run circulation for 4 hours.
- Bathe normally afterwards.
Pair with: Crystal Active Oxygen Granules + Crystal Water Treatment (Chlorine-Free).
⚠ Important — please read before use: Always follow the dosing instructions printed on the product label and on the Safety Data Sheet (SDS) supplied with the chemical. Consult your Wellis spa user manual for product-specific water-care guidance applicable to your model, water source, and usage pattern. Never mix water-care chemicals together directly — always add each product separately to circulating spa water with the pump running. The information on this page is provided as general guidance only and does not replace the manufacturer's instructions or professional advice. TwoRelax accepts no liability for damage, injury, water-quality issues, or equipment failure resulting from incorrect use, improper dosing, mixing of incompatible products, or failure to follow the manufacturer's instructions.