BioBizz Feeding Schedule

About BioBizz

BioBizz is Dutch, organic, and about as simple as a nutrient line gets. Bio-Grow is a sugar-beet-derived veg feed, Bio-Bloom covers flower, and Top-Max and Bio-Heaven are the two additives most people add. The bottles are OMRI-listed and the whole programme is designed to be run in soil, on the assumption that the soil biology is doing half the work.

It pairs naturally with their own Light-Mix and All-Mix soils — All-Mix comes pre-charged and needs little feeding early, Light-Mix is a blank canvas. Worth knowing which one you are in before you follow the chart.

The feed chart

All-Mix feeding schedule

Make a warm bed by using Biobizz substrates before you start.
Start using fertilizers once your seedling is 10-15 cm or has 2-4 leaves.
Target pH 6.2-6.5 (soil); a more controlled 6.2-6.3 for hydro/coco.
Water 2-3 times a week -- no need to water until run-off.
You can mix several fertilizers in the same feeding water.
It is always better to be modest than to add more -- a plant will not die from too little nutrient, but it may not survive an overdose.

All-Mix feeding schedule — All-Mix -- doses in mL per litre of water unless noted
Product	Propagation	Growth	Wk 1	Wk 2	Wk 3	Wk 4	Wk 5	Wk 6	Wk 7	Wk 8	Wk 9	Wk 10
Root-Juice	4 ml/L	4 ml/L	—	—	—	—	—	—	—	—	—	—
Bio-Grow	—	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	—	—
Fish-Mix	—	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	—	—
Bio-Bloom	—	—	1 ml/L	2 ml/L	2 ml/L	3 ml/L	3 ml/L	4 ml/L	4 ml/L	4 ml/L	—	—
Top-Max	—	—	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	4 ml/L	4 ml/L	4 ml/L	—	—
Bio-Heaven	2 ml/L	2 ml/L	2 ml/L	2 ml/L	3 ml/L	4 ml/L	4 ml/L	5 ml/L	5 ml/L	5 ml/L	—	—
Acti-Vera	2 ml/L	2 ml/L	2 ml/L	2 ml/L	3 ml/L	4 ml/L	4 ml/L	5 ml/L	5 ml/L	5 ml/L	—	—
Microbes	0.4 g/L	0.4 g/L	0.2 g/L	0.2 g/L	0.4 g/L	0.4 g/L	0.4 g/L	0.2 g/L	0.2 g/L	0.2 g/L	—	—

Light-Mix or Coco-Mix feeding schedule

Light-Mix or Coco-Mix feeding schedule — Light-Mix or Coco-Mix -- doses in mL per litre of water unless noted
Product	Propagation	Growth	Wk 1	Wk 2	Wk 3	Wk 4	Wk 5	Wk 6	Wk 7	Wk 8	Wk 9	Wk 10
Root-Juice	4 ml/L	4 ml/L	—	—	—	—	—	—	—	—	—	—
Bio-Grow	—	2 ml/L	2 ml/L	2 ml/L	3 ml/L	3 ml/L	4 ml/L	4 ml/L	4 ml/L	4 ml/L	—	—
Fish-Mix	—	2 ml/L	2 ml/L	2 ml/L	3 ml/L	3 ml/L	4 ml/L	4 ml/L	4 ml/L	4 ml/L	—	—
Bio-Bloom	—	—	1 ml/L	2 ml/L	2 ml/L	3 ml/L	3 ml/L	4 ml/L	4 ml/L	4 ml/L	—	—
Top-Max	—	—	1 ml/L	1 ml/L	1 ml/L	1 ml/L	1 ml/L	4 ml/L	4 ml/L	4 ml/L	—	—
Bio-Heaven	2 ml/L	2 ml/L	2 ml/L	2 ml/L	3 ml/L	4 ml/L	4 ml/L	5 ml/L	5 ml/L	5 ml/L	—	—
Alg-A-Mic	—	—	1 ml/L	2 ml/L	2 ml/L	3 ml/L	3 ml/L	4 ml/L	4 ml/L	4 ml/L	—	—
Acti-Vera	2 ml/L	2 ml/L	2 ml/L	2 ml/L	3 ml/L	4 ml/L	4 ml/L	5 ml/L	5 ml/L	5 ml/L	—	—
Microbes	0.4 g/L	0.4 g/L	0.2 g/L	0.2 g/L	0.4 g/L	0.4 g/L	0.4 g/L	0.2 g/L	0.2 g/L	0.2 g/L	—	—

Calmag supplement

Calmag supplement — Calmag supplement -- doses in mL per litre of water
	Hydro/Coco			Substrate
Use case	Wk 1-6	Wk 6-8	Wk 8-10	Wk 1-6	Wk 6-8	Wk 8-10
Prevention (RO/soft water)	0.5 ml/L	1 ml/L	1 ml/L	0.3 ml/L	0.5 ml/L	0.8 ml/L
Deficiency correction	0.5-0.8 ml/L	1-1.4 ml/L	1-1.4 ml/L	0.3-0.8 ml/L	0.5-0.8 ml/L	0.8-1.2 ml/L

pH adjusters

pH adjusters — pH adjusters -- dose and resulting pH change per litre
Product	Dose	pH change
Bio-Down	0.1 ml/L	-0.5 points
Bio-Up	0.1 ml/L	+0.1 points

A dash means BioBizz’s own chart does not call for that product at that stage. Propagation and Growth are the vegetative columns; the numbered weeks move through flowering. BioBizz’s own chart marks several rows with small reference numbers tying them to the numbered notes below — see the original PDF for exactly which note attaches to which row.

1. The vegetative phase can last for as long as needed.

2. It is beneficial to replace Bio·Grow® with Fish·Mix™ in the vegetative phase but switch to Bio·Grow® when you want to trigger flowering.

3. For every system: soil, hydro & aeroponics.

4. Alg·A·Mic™, Acti·Vera® and Fish·Mix™ can also be applied as a foliar, 1-3 times a week until the second week of flowering. Dose: when using 1 or 2 of the products, 1-2 ml/L water of each; when using all 3, max. 1 ml/L water of each.

Microbes: apply once a week, twice a week during high nutrient demand in the growing and flowering stages.

Figures as published by BioBizz (document Nutrient-Schedule-EN-PF-2025). Feeding charts are recommendations only. Adjustments may be needed based on environmental conditions, your grow structure, and any additional products you run. Actual results vary.