Plant Magic Coco Feed Chart – Coco A&B Doses and EC
Plant Magic's own published ESSENTIAL Coco schedule. Week by week, in millilitres per litre of water.
- All dosesper litre
- Total EC0.8 – 2.2
- Base feedCoco A & B, 2–4ml of each
Every figure is millilitres per litre of water. A 10-litre can of 3ml Coco A & B takes 30ml of A and 30ml of B. Flower 9 is a plain-water week, which is why the whole column is blank.
Getting it right
- The chart opens with a cutting week, and flowering starts again at 1. Cutting 1 is the week the plant goes into its pot. When the lights change to twelve hours the count resets, so Flower 1 is the first week of flowering, not a fourth grow week.
- Coco A and Coco B go in at the same rate as each other. Where the chart says 3ml, that is 3ml of A and 3ml of B per litre.
- Never pour A and B together. Add A to the water, stir it in, then add B. Undiluted the two react and the calcium drops out as a white sludge the roots cannot use.
- Coco keeps no reserve, so every watering is a feed. There is no fertiliser in the fibre and nothing held back for later. Water alone between feeds and the plant simply goes without.
- Feed to run-off. Aim for 10 to 20% of what you pour to come out of the bottom of the pot. That is what stops salts collecting in the coco and pushing the EC above the target.
- The EC target moves every week. Plant Magic publish it as 0.8, 1.0 and 1.2 through Cutting 1, Grow 1 and Grow 2, then 1.4, 1.4, 1.6, 1.6, 1.8, 2.0, 2.2 and 1.8 across Flower 1 to 8, finishing at 0.6 for the plain-water week. That is total EC in the mixed feed, tap water included.
- Magne-Cal+ is the one starred item. Plant Magic mark it "if usage required" — it goes in when the plants show they want more calcium and magnesium, which is common on soft or filtered water and under strong LED light. It doubles from 0.5ml to 1ml at Flower 4.
- Evolution 2.0 is sprayed, not poured. It is a ready-mixed foliar tonic applied one or two times a week as needed, so the chart shows "Spray" rather than a dose. Mist it with the lights off.
- The chart's Ignition Boost is Plant Magic Boost. It is the early-bloom stimulant, 2ml per litre from Flower 1 right through to Flower 8.
- PK 13/14 climbs, then stops. It starts at 1ml in Flower 4, goes to 1.5ml, then holds at 2ml through Flower 8. Nothing goes in during that final week.
- Flower 9 is plain water. Everything comes off the feed for the last week so the plant uses up what is stored in the leaf.
- This is the ESSENTIAL schedule. Plant Magic also publish an ULTIMATE version with extra bottles. The doses above belong to the ESSENTIAL chart only.
Everything on the chart
Coco A & B
From £12.49
2–4ml of each, all the way to the final week
Root Stimulant
From £58.95
2.5ml, Cutting 1 to Flower 2
Evolution 2.0
From £9.49
Foliar spray, once or twice a week
Magne-Cal+
From £8.49
0.5ml, then 1ml from Flower 4
Plant Magic Boost
From £28.49
2ml, Flower 1 to Flower 8
PK 13/14
From £10.49
1ml to 2ml, Flower 4 to Flower 8
Common questions
Why does the week count go back to 1 at bloom?
Because the two stages are counted separately. The chart opens with Cutting 1, then Grow 1 and Grow 2. The moment the lights go to twelve hours you start again at Flower 1. It keeps the flowering doses lined up with the plant no matter how long you vegetated for.
Do Coco A and Coco B go in at different rates?
No. They are used at the same rate as each other — 3ml on the chart means 3ml of A and 3ml of B in every litre. Add A first, stir, then add B.
Do I have to use Magne-Cal+?
Plant Magic star it as "if usage required". Reach for it when leaves show they are short of calcium or magnesium, which happens most often on soft or reverse-osmosis water and under strong LED lighting.
What is Evolution 2.0 and how is it used?
It is a ready-mixed foliar tonic. You spray it onto the leaves one or two times a week as needed rather than adding it to the tank, which is why its row reads "Spray" instead of a dose.
What happens in Flower 9?
Nothing but water. The whole column is blank because that final week is plain water — no base feed, no additives.
Growing in soil or hydroponics instead?
Plant Magic publish a separate ESSENTIAL schedule for each medium. They are listed with everything else on the feed charts index.
Shop the full Plant Magic range
Figures as published by Plant Magic on their ESSENTIAL Coco Schedule, plantmagic.co.uk. Always read the label on the bottle you own. Plant Magic is a trade mark of its owner.