Consumer advocacy teardown
Total Alkalinity TA Plus alternative & active ingredient dupe
Stop paying £11.99 for Clearwater. The bulk active is Food / technical grade sodium bicarbonate — 93% less per working litre than a typical pack.
- Active
- Sodium bicarbonate
- CAS
- 144-55-8
- Dupe
- Food / technical grade sodium bicarbonate
- Saving
- 93% / L
Saving is per litre of working-strength mix versus a typical pack price, not versus the DIY kit total. Shop prices move — always check the listing.
The Marketing Claim & The Catch
A typical 1 kg tub pack of Clearwater Total Alkalinity TA Plus is about £11.99 in pool & spa. That is a snapshot, not a live Amazon price — listings, sizes and deals move. The marketing line is that you are buying a finished lifestyle product, not a weighed chemical.
On the pack: Stops pH bounce and erratic swings; Protects hot tub and pool equipment from corrosion; and Essential baseline buffer.
The catch: Standard baking soda sold at a 1,200% retail markup under spa branding.
- “Stops pH bounce and erratic swings”
- “Protects hot tub and pool equipment from corrosion”
- “Essential baseline buffer”
Proprietary Blend & Dosage Breakdown
The labelled active is Sodium bicarbonate at 100%. Everything else in the pack is none (pure salt).
Even when the pack is sold as “pure” or ready-to-use, the dose that actually does the work is Sodium bicarbonate. The rest is how they get it into a bottle you will pick up.
Branded working strength is whatever comes out of the bottle. The bulk alternative is 100% Food / technical grade sodium bicarbonate, mixed to 18 g per 1,000 L raises total alkalinity by 10 ppm.
- Labelled active
- Sodium bicarbonate
- 100%
- Carrier
- None (pure salt)
- Retail pack
- 1 kg tub · £11.99
The Active Chemical Alternative (Dupe Stack)
The dupe stack is Food / technical grade sodium bicarbonate at 100% bulk. Indexed as CAS 144-55-8, formula NaHCO3. Buy it as 25 kg sack for about £19.50 from Amazon UK.
Working strength: 18 g per 1,000 L raises total alkalinity by 10 ppm. Indicative cost £0.78 per diluted litre — 93% below a typical branded pack on a per-litre basis, before you reuse leftover bulk.
Follow the mixing method and the supplier SDS. Wear the listed PPE. Do not mix incompatible oxidisers, acids or ammonia.
- Test water with standard test strips to establish baseline TA (ideal range: 80–120 ppm).
- Dissolve the required weight of sodium bicarbonate in a clean bucket of warm spa water.
- Pour slowly around the perimeter with the circulation pumps running.
Mixing desk
Dilution calculator
Switch between filling a sprayer and covering a measured surface. Figures are educational estimates from the listed ratio — always check the SDS.
Formula
Food / technical grade sodium bicarbonate
- Concentrate
- 18 g
- grams of solid
- Water
- 1,000 L
- carrier volume
- Batch cost
- £0.01
- 1,000 L working solution
- Saved vs retail
- £0.20
- 94% · retail £0.22
Estimated coverage at the listed rate: 0.8 m².
Side-by-Side Price & Potency Comparison
Head-to-head comparison
| Measure | Retail brandedClearwater | Raw active dupeDupeStack |
|---|---|---|
| Product | Total Alkalinity TA PlusAmazon UK search — listing, not a confirmed seller | Food / technical grade sodium bicarbonate |
| Pack / unit | 1 kg tub · £11.99 | 25 kg sack · £19.50 |
| Active | Sodium bicarbonate at 100%Carrier: None (pure salt) | 100% bulkNaHCO3 |
| CAS number | Not disclosed on pack | 144-55-8 |
| Working strength | Ready-to-use pack | Dilute 18 g per 1,000 L raises total alkalinity by 10 ppm |
| Cost per litre | £11.99 / pack | £0.78 / L mixed from bulk |
| Headline saving | Baseline | 93% cheaper |
| COSHH / PPE | Follow the branded SDS | Gloves. Chemical-resistant gloves (nitrile or neoprene)Eye protection. Indirect-vent splash goggles — not ordinary spectacles |
Active ingredient and cheaper alternative — FAQ
What is the active ingredient in Clearwater?
Clearwater Total Alkalinity TA Plus is labelled as Sodium bicarbonate at 100%. The carrier is None (pure salt). Pack size: 1 kg tub. The bulk equivalent we index is Food / technical grade sodium bicarbonate (CAS 144-55-8).
Is Food / technical grade sodium bicarbonate safe on the intended surface?
Used at the listed working strength (18 g per 1,000 L raises total alkalinity by 10 ppm), the dupe is the same chemistry as the branded pack for pool and spa water once dosed from a test kit. That is not a blanket all-clear: read the supplier SDS, wear the listed PPE, keep acids away from hypochlorite, and follow UK HSE/COSHH rules. Wellness teardowns are supplements, not medicines.
Is there a cheaper alternative to Clearwater Total Alkalinity TA Plus?
Yes. The bulk equivalent is Food / technical grade sodium bicarbonate (CAS 144-55-8). Indicative saving 93% per working litre versus a typical £11.99 pack. Working strength: 18 g per 1,000 L raises total alkalinity by 10 ppm. Live shop prices move.
How do you mix the Total Alkalinity TA Plus dupe stack?
Test water with standard test strips to establish baseline TA (ideal range: 80–120 ppm). Dissolve the required weight of sodium bicarbonate in a clean bucket of warm spa water. Pour slowly around the perimeter with the circulation pumps running.
DupeStack provides chemical concentration data and educational mixing guides. Always review official manufacturer Safety Data Sheets (SDS) and comply with UK Health and Safety Executive (HSE) and COSHH regulations when handling concentrated substances. Some links on this site are affiliate links.
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- Retail pack
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- Raw active
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DIY stack · 93% / L vs branded
£28.49indicative kit · Amazon cannot add a mixed search kit as one basket