Wellis Crystal Swim Spa Chemical Package
What it includes
- 26 × water-soluble sanitiser packs (100 g each)
- 30 × 20 g chlorine tablets at 90% active chlorine
- 1 chlorine tablet holder
- 1 microfibre cleaning cloth
- Printed instructions for use
When to use
Initial fill of a Wellis swim spa, or after a quarterly water change. Sufficient for ~3 months of private swim spa use.
How to use
- Fill the swim spa via Pure Fill prefilter (and Pure Stream if hard water).
- Balance alkalinity and pH first.
- Add the water-soluble pack per the included dosing card based on your swim spa volume.
- Place chlorine tablets in the holder, suspend in the swim spa.
- Test 2–3× per week with Crystal Pool Check 5-in-1.
Follow the included printed instructions for swim-spa-specific dosing — volumes are higher than standard hot tubs.
⚠ 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.