
Running low on chlorine mid-season is one of the easiest ways to lose control of your water chemistry. Keep your pool or hot tub clean and hygienic with this 10kg twin-pack of ClearWater® Stabilised Chlorine Granules — a rapid-dissolving sanitiser that's essential for safe, healthy water, without the hassle of reordering every few weeks.
Supplied as two tubs, 10kg total, this bulk pack is built for anyone who doesn't want to be caught short mid-season, with fast-dissolving, easy-access tub containers that make measuring out a dose straightforward rather than fiddly. The formula kills bacteria and eliminates harmful organisms while having a minimal impact on water pH, so you're not constantly rebalancing after every dose. It works equally well for shock dosing after heavy use or a period of neglect, and for routine ongoing sanitising to keep water clear day to day.
Ideal for shock dosing a hot tub or pool after a busy weekend, and perfect for anyone who wants a season's worth of chlorine on hand without repeated reorders, buying in this twin-pack format also lowers your cost per kilo compared with smaller tubs.
- Pack size: Two tubs, 10kg total
- Formula: ClearWater® Stabilised Chlorine Granules, rapid-dissolving
- Water pH impact: Minimal, for easier balancing
- Use case: Suitable for both shock dosing and routine sanitising
- Target chlorine levels: 3–5ppm for hot tubs, 1–3ppm for pools
- Safety: Always read the instructions and warnings on the pack carefully before use
How do I dose my hot tub or pool with these granules?
Test your water with dip test strips, measure out the granules you need, dissolve them in a jug of warm water, then pour the solution near the inlets. Wait around four hours before re-testing to confirm your chlorine level.
What chlorine level should I be aiming for?
Aim for 3–5ppm in a hot tub and 1–3ppm in a pool, checking with dip test strips before and after dosing.
Is this suitable for shock dosing after heavy use?
Yes — the formula is ideal for shock dosing as well as ongoing routine sanitising, so one product covers both jobs.
Why buy the 10kg twin-pack instead of a single tub?
Buying in bulk keeps your pool or hot tub sanitised all season without the hassle of frequent top-ups, while lowering your cost per kilo compared with a single smaller tub.
- Free UK delivery on orders over £20, with express delivery available for £4.99
- Trusted, rapid-dissolving formula for consistent results every time
- Bulk value: two tubs supplied together, lowering the cost per kilo versus buying single tubs