Mills Nutrient Full Coco Kits (1-8 Plants) - Complete Coco Feeding in One Box
Best for: Coco coir growers who want every stage of feeding covered by one matched nutrient range instead of piecing it together themselves.
Our thoughts
Mills has been making nutrients in the Netherlands for decades and their coco range is built as a proper system, not a base feed with a few bolt-ons. Buying the kit means you're not left short of something halfway through flower because you only bought the base nutrient. One we sell a lot of for growers who want the range sorted in one go.
The Mills Full Coco Kit bundles the full Mills feeding range sized for coco coir growing, built around Mills Basis A and Basis B as the core two-part base nutrient supplying macro and micronutrients through both veg and flower. Alongside the base, the kit adds Mills Start-R for root development and establishment, Mills C4 as a flowering-stage bloom additive, Mills PK for a late-flower phosphorus and potassium boost, Mills CalMag for the extra calcium and magnesium coco substrates need, and Mills Vitalize, a silicon additive that strengthens plant structure and supports nutrient uptake.
The kit comes in two sizes: a 1-4 Plants kit and a 4-8 Plants kit, scaled by bottle volume rather than formulation, so both give you the identical six-product Mills range, just sized for your plant count. Basis A and B are always mixed and added separately, never combined as concentrates, to avoid the two locking out nutrients before they reach the root zone.
How it compares
Complete coco kits from the major Dutch nutrient brands are all built around a similar two-part-base-plus-additives structure.
- Versus Canna Coco A+B, which is a simpler two-bottle-plus-boosters range, Mills includes more dedicated additives (Start-R, C4, PK, Vitalize) as standard in the kit rather than as separate purchases.
- Versus House & Garden's coco range, Mills is generally the more budget-friendly complete kit while still covering root, base, bloom and late-flower stages.
- Versus Plagron's coco range, both are comparably complete, with Mills having a long track record specifically in coco substrates.
You're paying for six matched products bought as one kit rather than assembling a feeding programme bottle by bottle.
Usage guidance
Follow the Mills feeding schedule for coco rather than mixing and matching doses from other brands.
Mixing Basis A and B
Add Basis A to your water and mix thoroughly first, then add Basis B separately and mix again. Never combine the two concentrates before they're diluted.
Early growth
Add Start-R alongside the base feed during propagation and early vegetative growth to support root establishment.
Flowering
Introduce C4 as plants move into flower, then add PK during the later flowering weeks for the bloom finish.
CalMag and Vitalize
Run CalMag throughout to cover coco's naturally lower calcium and magnesium availability, and add Vitalize for structural strength, particularly under strong lighting.
Technical specifications
- Kit contents: Basis A, Basis B, Start-R, C4, PK, CalMag, Vitalize
- Kit sizes: 1-4 Plants, 4-8 Plants
- Growing medium: Coco coir
- Base type: Two-part (A and B), mixed separately
- Additives included: Root, bloom, late-flower and silicon supplements
- Manufacturer: Mills Nutrients, Netherlands
Who this is for
- Coco coir growers who want one matched range covering every stage of the grow
- Growers who'd rather buy a complete kit once than keep topping up individual bottles
- Anyone switching to coco from soil or hydro who wants a proven, coco-specific programme
- Growers running 1-8 plants who want the kit sized to their plant count
Best for growers in coco specifically; Mills also sells dedicated soil and hydro ranges if that's your medium.
Our take
Saves time and removes guesswork by giving you everything the crop needs from root to late flower in one purchase, with a brand that's been doing coco feeding for decades.
Does exactly what it should, day in, day out, and it's the kit we point new coco growers toward first.
