In stock now. A one-part vegetative feed, formulated for the unique chemistry of coco.
Coco holds calcium and magnesium while releasing potassium. IONIC Coco Grow rebalances K, Ca and Mg before problems start, and is buffered to hold pH steady in coco's shifting chemistry. Tailored for slabs and loose coco alike.
Switch to Coco Bloom when flowering starts.
Key features
- One-part feed. No A and B mixing
- Rebalances K, Ca and Mg for coco's chemistry
- Buffered to hold pH steady
- For slabs and loose coco alike
- Dilution / Dose
- 5ml/L throughout the grow stage, with Root Boost at 0.5–1ml/L in weeks 1–2 and Tonic at 1ml/L joining from week 3.
- When To Use
- Weeks 1–5 of the grow cycle (coco coir)
- Substrate Fit
- Built specifically for coco. IONIC doses differently by medium — Soil, Hydro, Hard Water and Coco each have their own schedule, so don't cross them over.
- Grower Notes
- Coco is inert, so Tonic runs as a routine top-up from week 3 (not just an as-needed fix like in soil or hydro) to keep calcium and magnesium available. Pair with Root Boost in weeks 1–2, and bring in Flower Boost from week 5.
Good practice
- Add products to the tank one at a time, stirring between each. Never mix concentrates straight from the bottle.
- Keep any stored solution covered — light in stored solution eventually means algae.
- Every medium doses differently. IONIC Hydro, Coco and Soil each have their own schedule.
- Measure every dose — eyeballing is where most feed problems start.
The Ionic Range
IONIC is one system, twelve products — a dedicated Grow and Bloom feed for each growing medium, plus four boosters used across all of them. Here's the full range:
FAQs
Why does Coco need Tonic so early?
Coco coir is an inert medium and naturally binds calcium and magnesium, so Tonic runs as a routine weekly top-up from week 3 rather than an occasional fix.
When do I switch to Bloom?
Move onto Coco Bloom from week 6.
Can I use this in soil or hydro?
Use the medium-matched formula instead: Soil Grow or Hydro Grow.