BioGreen Coco Feed Chart – A&B Doses, EC and pH
BioGreen's own published Coco A&B schedule. Week by week, in millilitres per one litre of water.
- All dosesper 1 litre
- pH5.4 – 6.2
- Base feedA&B, 1ml to 3ml
Every figure is millilitres per one litre of water. Multiply by ten for a 10-litre watering can — so 3ml here is 30ml in a full 10-litre can. A dash means the bottle is not used that week.
Getting it right
- These are per-litre doses, not per ten litres. Most UK charts are written per 10 litres. This one is not. Read the figure, then multiply by the number of litres you are mixing.
- The A&B row is one figure for a two-part feed. Part A and Part B are separate bottles. Add them to the water one at a time, never into each other, and follow the ratio printed on the bottles you own.
- PK 13/14 and X-Blast are not run together. BioGreen print that instruction on the chart: PK 13/14 at Flower 3 and Flower 4, X-Blast from Flower 5 onwards. Both appear against the later columns of the grid, so pick one — do not add both.
- X-Force is measured in fractions of a millilitre. 0.1ml from Cutting 1 to Grow 4, 0.15ml from Flower 1 to Flower 9. In a 10-litre can that is 1ml and 1.5ml. Use a syringe, not a bottle cap.
- Calgel carries no weekly dose here. BioGreen give one instruction instead: if your tap water reads below EC 0.6, add Calgel until the reservoir reaches 0.6. Soft and reverse-osmosis water needs it; hard tap water usually does not.
- The plain-water week is not an empty one. Base feed, PK 13/14, X-Blast, X-Force and Garlic all stop. Biozym stays at 3ml and X-Bloom at 2ml.
- Feed to the EC, not just the millilitre. BioGreen publish a target for every column: 0.6–0.8 at rooting; 1.0–1.2, 1.2–1.4 and 1.4–1.6 through veg; then 1.6–1.8, 1.8–2.0, 2.0–2.2, 2.0–2.2, 2.1–2.3, 2.1–2.3 and 2.0–2.2 through flowering; 1.6–1.8 at Flower 8 and Flower 9; and 0.0–0.8 in the final plain-water week. If your mix lands well above the figure, water it back.
- Keep the pH between 5.4 and 6.2. Check it after everything is mixed, not before — the additives move it.
Everything on the chart
BioGreen A&B
From £13.49
1ml to 3ml, Grow 1 to Flower 9
X-Rooting
From £31.95
2ml Cutting 1 to Grow 2, 0.5ml from Flower 3
Biozym
From £26.00
1ml rising to 3ml, through the final week
X-Bloom
From £44.95
1ml then 2ml, Flower 1 through the final week
PK 13/14
From £10.49
1ml to 1.5ml, Flower 3 to Flower 9
X-Blast
From £33.95
1.5ml then 1ml, Flower 5 to Flower 9
X-Force
From £36.99
0.1ml then 0.15ml, Cutting 1 to Flower 9
Garlic
From £24.49
1ml, Cutting 1 to Flower 9
Common questions
What does 3ml per litre mean in my watering can?
Multiply by the number of litres. A 10-litre can needs 30ml; a 5-litre can needs 15ml. The figures on this chart are per single litre, which is unusual — most brands print per 10 litres.
Do I use PK 13/14 or X-Blast?
One or the other, never both. BioGreen print it on the chart: PK 13/14 at Flower 3 and Flower 4, then X-Blast from Flower 5 onwards.
My water is very soft. What do I add?
Calgel. It has no weekly dose on this chart. BioGreen say to add it until the reservoir reads EC 0.6 if your tap water starts below that. Reverse-osmosis water almost always needs it.
Why do Biozym and X-Bloom carry on into the final week?
That is what the chart shows. The last column drops the base feed, PK 13/14, X-Blast, X-Force and Garlic, but keeps Biozym at 3ml and X-Bloom at 2ml.
Is this the same chart as the soil and hydro ones?
No. BioGreen publish a separate chart for coco, for hydro and for soil, and the base-feed rates differ. All of ours sit in the feed chart index.
Figures as published by BioGreen on their own coco feeding chart, biogreenuk.com. Always read the label on the bottle you own. BioGreen is a trade mark of its owner.