Consumer advocacy teardown
Tomorite Concentrated Tomato Food alternative & active ingredient dupe
Stop paying £5.50 for Levington. The bulk active is Soluble tomato fertiliser 4-4-8 (or 6-5-12) — 83% less per working litre than a typical pack.
- Active
- Liquid NPK 4-3-8 with seaweed extract
- CAS
- 66455-26-3
- Dupe
- Soluble tomato fertiliser 4-4-8 (or 6-5-12)
- Saving
- 83% / 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 litre pack of Levington Tomorite Concentrated Tomato Food is about £5.50 in lawn & garden. 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: The country’s favourite tomato food; and More fruit, better flavour.
The catch: A dilute high-potash bottle with a pinch of kelp. Soluble tomato feed around 4-4-8 (or 6-5-12) at 2 g/L is the same three numbers without the green dye. This is not Miracle-Gro 20-20-20 — tomatoes want potassium.
- “The country’s favourite tomato food”
- “More fruit, better flavour”
Proprietary Blend & Dosage Breakdown
The labelled active is Liquid NPK 4-3-8 with seaweed extract at 15%. Everything else in the pack is water and seaweed liquor.
At 15% active, most of what you pay for is carrier and packaging. The brand is selling convenience, fragrance and a label — not a uniquely potent molecule.
Branded working strength is whatever comes out of the bottle. The bulk alternative is 16% Soluble tomato fertiliser 4-4-8 (or 6-5-12), mixed to 2 g/L.
- Labelled active
- Liquid NPK 4-3-8 with seaweed extract
- 15%
- Carrier
- Water and seaweed liquor
- Retail pack
- 1 litre · £5.50
The Active Chemical Alternative (Dupe Stack)
The dupe stack is Soluble tomato fertiliser 4-4-8 (or 6-5-12) at 16% bulk. Indexed as CAS 66455-26-3, formula N + P2O5 + K2O. Buy it as 1 kg for about £9.50 from Amazon UK.
Working strength: 2 g/L. Indicative cost £0.02 per diluted litre — 83% 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.
- Wear gloves if you have broken skin. Dissolve 2 g of soluble tomato feed in 1 litre of water.
- Feed once or twice a week from first truss, as you would a capful of Tomorite (typically 20 ml of the bottle per litre).
- 1 kg at 2 g/L is about 500 litres of working feed. A 1 litre Tomorite bottle at 20 ml/L is 50 litres.
- Optional: a pinch of Epsom salts (magnesium sulphate) if leaves yellow between veins.
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
Soluble tomato fertiliser 4-4-8 (or 6-5-12)
- Concentrate
- 10 g
- grams of solid
- Water
- 5 L
- carrier volume
- Batch cost
- £0.10
- 5 L working solution
- Saved vs retail
- £27.41
- 100% · retail £27.50
Side-by-Side Price & Potency Comparison
Head-to-head comparison
| Measure | Retail brandedLevington | Raw active dupeDupeStack |
|---|---|---|
| Product | Tomorite Concentrated Tomato FoodAmazon UK search — listing, not a confirmed seller | Soluble tomato fertiliser 4-4-8 (or 6-5-12) |
| Pack / unit | 1 litre · £5.50 | 1 kg · £9.50 |
| Active | Liquid NPK 4-3-8 with seaweed extract at 15%Carrier: Water and seaweed liquor | 16% bulkN + P2O5 + K2O |
| CAS number | Not disclosed on pack | 66455-26-3 |
| Working strength | Ready-to-use pack | Dilute 2 g/L |
| Cost per litre | £5.50 / L typical pack | £0.02 / L mixed from bulk |
| Headline saving | Baseline | 83% cheaper |
| COSHH / PPE | Follow the branded SDS | Gloves. Chemical-resistant gloves (nitrile or neoprene) |
Active ingredient and cheaper alternative — FAQ
What is the active ingredient in Levington?
Levington Tomorite Concentrated Tomato Food is labelled as Liquid NPK 4-3-8 with seaweed extract at 15%. The carrier is Water and seaweed liquor. Pack size: 1 litre. The bulk equivalent we index is Soluble tomato fertiliser 4-4-8 (or 6-5-12) (CAS 66455-26-3).
Is Soluble tomato fertiliser 4-4-8 (or 6-5-12) safe on lawns?
Used at the listed working strength (2 g/L), the dupe is the same chemistry as the branded pack for lawns, beds and pots. 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 Levington Tomorite Concentrated Tomato Food?
Yes. The bulk equivalent is Soluble tomato fertiliser 4-4-8 (or 6-5-12) (CAS 66455-26-3). Indicative saving 83% per working litre versus a typical £5.50 pack. Working strength: 2 g/L. Live shop prices move.
How do you mix the Tomorite Concentrated Tomato Food dupe stack?
Wear gloves if you have broken skin. Dissolve 2 g of soluble tomato feed in 1 litre of water. Feed once or twice a week from first truss, as you would a capful of Tomorite (typically 20 ml of the bottle per litre). 1 kg at 2 g/L is about 500 litres of working feed. A 1 litre Tomorite bottle at 20 ml/L is 50 litres. Optional: a pinch of Epsom salts (magnesium sulphate) if leaves yellow between veins.
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 · 83% / L vs branded
£18.50indicative kit · Amazon cannot add a mixed search kit as one basket