Wellis Crystal Set (Big)
When to use
Best for owners 1–2 months past their initial Standard package who want a refill of the high-frequency items (chlorine, pH Down, test strips) plus a couple of corrective products.
How to use
Use each component per its individual product instructions. Consult the Water Care Guide for the full Wellis spa maintenance schedule and dosing reference.
⚠ 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.