Terra Aquatica Soil Feed Chart – TriPart Doses
Terra Aquatica's own published TriPart rates for soil and potting mixes. Same three bottles as the hydro chart, at noticeably lower rates. Millilitres per litre of water.
- All dosesper LITRE
- pH6.0 – 7.0
- Base feed0.2–2.1ml of each part
- RipeningFinalPart 4ml
The chart as text
| Stage | Micro | Grow | Bloom | FinalPart | EC (mS) |
|---|---|---|---|---|---|
| First roots | 0.2ml | 0.2ml | 0.2ml | – | 0.2–0.5 |
| First true leaves | 0.6ml | 0.6ml | 0.6ml | – | 0.6–1.0 |
| Growing | 1.0ml | 1.5ml | 0.5ml | – | 1.1–1.6 |
| Pre-flowering | 1.5ml | 1.5ml | 1.0ml | – | 1.4–1.8 |
| Flowering | 1.4ml | 0.7ml | 2.1ml | – | 1.3–1.7 |
| Ripening | – | – | – | 4ml | 1.3–2.0 |
Terra Aquatica stage the chart by what the plant is doing rather than by week number — that is how they publish it.
Getting it right
- Do not use the hydro chart in soil. The rates above are markedly lower, and a potting mix already carries a charge of its own.
- Never premix the concentrates. Each part goes into the water separately, or they crystallise. Rinse the jug between parts.
- Match the Micro to your water. Over 70 mg/L calcium takes the hard water version; RO and rainwater take the soft water one.
- Ripening is FinalPart on its own, at up to 4ml per litre in soil, for about ten days.
- Soil runs a higher pH than hydro — 6.0 to 7.0 rather than 5.5 to 6.5.
Everything on the chart
TriPart Micro, soft water
From £11.45
For RO and soft supplies
TriPart Micro, hard water
From £12.95
Over 70 mg/L calcium
TriPart Grow
From £6.49
The vegetative part
TriPart Bloom
From £6.49
The flowering part
FinalPart
From £7.49
4ml, ripening, alone
Pro Organic Grow
From £9.49
The organic soil route
Pro Organic Bloom
From £9.49
Organic flowering feed
Terra Aquatica CalMag
From £7.99
For RO water
Common questions
Why are the soil numbers so much lower?
A potting mix already holds a nutrient charge and buffers what you add. Hydroponics and coco hold almost none, so the feed has to carry everything.
Can I use the hydro chart if I water by hand?
Not in soil — the medium is the variable, not the watering method. Use the soil rates above.
Is this the old GHE Flora series?
Yes. General Hydroponics Europe became Terra Aquatica, and Flora Micro, Grow and Bloom became TriPart Micro, Grow and Bloom.
Shop the full Terra Aquatica range
Figures as published by Terra Aquatica in their Application Tables, terraaquatica.com. Always read the label on the bottle you own. Terra Aquatica is a trade mark of its owner.