• Clearwater pH Minus 1.5kg tub for hot tubs and pools
1 1

Clearwater

Clearwater pH Minus (1.5kg)

Clearwater pH Minus (1.5kg)

£12.99 GBP
£17.99 GBP £12.99 GBP
Sale Sold out
Shipping calculated at checkout.
Only 12 left in stock — order soon
12 people are viewing this right now

🔄 Free Returns – 30-Day Window (Sale Items Final)

🥇 All Products Comprehensive Warranty

🔒 Secure Checkout – SSL Encrypted

💳 0% Finance Available*

We accept:
American Express Apple Pay Diners Club Discover Google Pay Maestro Mastercard Shop Pay Union Pay Visa
View full details

Keep your hot tub water perfectly balanced with Clearwater pH Minus, fast-dissolving granules that bring high pH and Total Alkalinity back into the ideal range. When pH climbs above 7.6, water quality suffers and chlorine stops working efficiently — pH Minus fixes that fast.

Formulated with a chemical acid that neutralises alkaline compounds, it prevents scale, cloudiness and discomfort, keeping your spa comfortable and your chlorine treatment working as intended.

  • Size: 1.5kg
  • Form: Fast-dissolving granules
  • Dosage: 1g per 100L lowers pH by 0.1
  • Target pH Range: 7.2–7.6
  • UPC: 798256029103
  • Test your water — if pH or Total Alkalinity is too high, use pH Minus
  • Measure the correct quantity for your volume
  • Dissolve granules in warm water, then pour into the hot tub
  • Run the filter for 4 hours, then retest and repeat if needed
  • Fast-acting, reliable pH and alkalinity control
  • Protects equipment and improves chlorine performance
  • Trusted Clearwater formula for hot tubs and pools
  • Backed by our satisfaction guarantee and responsive support
  • 1x 1.5kg tub of Clearwater pH Minus granules

Frequently Asked Questions

How is my sauna or hot tub delivered?

We offer kerbside delivery across the UK and selected European countries. Our team will contact you to arrange a suitable delivery window. Lead times vary by product — typically 2–6 weeks. Please ensure suitable access for large items.

Do I need a professional to install my sauna pod or hot tub?

Most of our sauna pods and hot tubs are designed for straightforward self-installation with the included instructions. However, electrical connections must be carried out by a qualified electrician. We recommend consulting a professional for any groundwork or decking.

What warranty is included?

All products come with a minimum 2-year manufacturer's warranty covering structural defects and components. Extended warranty options are available — contact us for details.

Can I use my hot tub or sauna year-round in the UK?

Yes. Our products are designed for year-round outdoor use in the UK climate. Thermowood and spruce models are treated for weather resistance, and our hot tubs maintain temperature efficiently even in winter.

Worldwide Delivery Anywhere

Genuine Brand Products

Price Match Guaranteed

Free Consultations Available