The BioBizz feeding schedule tells you how many ml of each product to dissolve in a litre of water at each stage. In the official 2026 version, Bio·Grow, Bio·Bloom and Top·Max are dosed at 1 to 4 ml/l depending on the week; flowering covers 8 weeks of feeding, followed by one week of plain water and then harvest. There are two schedules, one for Light·Mix and Coco·Mix and a lighter one for All·Mix, which comes pre-fertilised. BioBizz itself advises staying modest rather than adding more.
In brief
- Flowering weeks are counted from the switch to 12/12; propagation and the vegetative stage have no fixed length.
- Light·Mix and Coco·Mix share one schedule; All·Mix has its own, with less Bio·Grow in flowering.
- Bio·Grow and Fish·Mix do the same job: use only one, and Bio·Grow in flowering.
- The 2026 chart gives no EC values: with organic products, watching the plant matters most.
- Hard water: Bio·Down; soft or reverse osmosis water: CalMag.
BioBizz products and what they do
- Bio·Grow: the base grow nutrient, used in the vegetative stage and, at varying doses, throughout flowering.
- Fish·Mix: an alternative to Bio·Grow during growth, not to be combined with it.
- Bio·Bloom: the bloom nutrient, from the first week of 12/12.
- Top·Max, Root·Juice and Alg·A·Mic: stimulators; Top·Max for flowering, Root·Juice for roots in the early stages, Alg·A·Mic based on seaweed.
- Bio·Heaven and Acti·Vera: a booster and an activator, included at every stage of the chart.
- Microbes: microorganisms (Trichoderma and Bacillus) dosed in grams, 0.2–0.4 g/l once a week, twice during periods of high demand.
- CalMag: calcium and magnesium for soft or reverse osmosis water; the chart gives no dose, so follow the label.
Light·Mix or All·Mix: when to start feeding
In the 2026 chart, propagation and the vegetative stage have almost the same doses for all BioBizz growing media: Root·Juice 4 ml/l, Bio·Grow 2 ml/l, Bio·Heaven and Acti·Vera 2 ml/l each; in the vegetative stage Light·Mix and Coco·Mix add Alg·A·Mic at 2 ml/l. The main differences come in flowering. Light·Mix is lightly fertilised and handles the full doses; All·Mix comes pre-fertilised and, according to the manufacturer, feeds the plant for a couple of weeks without additions: that is why its schedule uses less Bio·Grow and, as BioBizz puts it, needs a lighter hand. On All·Mix, start at the low end in the first weeks too and increase once the lower leaves begin to pale.
For Bio·Grow, BioBizz advises starting between the appearance of the first leaves and the point when the plant is 10–15 cm tall. With small or delicate seedlings, start at the low end and only increase once growth is vigorous. Choosing a growing medium is covered in the guide to soil for cannabis.
BioBizz feeding schedule 2026 for Light·Mix and Coco·Mix
Values in ml per litre of water as given by the manufacturer in the official 2026 chart; “–” means the product is not used. Fish·Mix, as an alternative to Bio·Grow, uses the same doses.
| Stage | Root·Juice | Bio·Grow | Bio·Bloom | Top·Max | Alg·A·Mic | Bio·Heaven | Acti·Vera |
|---|---|---|---|---|---|---|---|
| Propagation | 4 | 2 | – | – | – | 2 | 2 |
| Vegetative | 4 | 2 | – | – | 2 | 2 | 2 |
| Flowering wk 1 | 2 | 3 | 2 | 1 | 2 | 2 | 3 |
| Flowering wk 2 | 2 | 4 | 3 | 2 | 2 | 3 | 4 |
| Flowering wk 3 | – | 4 | 3 | 2 | 3 | 4 | 5 |
| Flowering wk 4 | – | 4 | 4 | 3 | 3 | 5 | 5 |
| Flowering wk 5 | – | 2 | 4 | 3 | 4 | 5 | 3 |
| Flowering wk 6 | – | 2 | 4 | 4 | 4 | 3 | 3 |
| Flowering wk 7 | – | 2 | 3 | 4 | 3 | 3 | 2 |
| Flowering wk 8 | – | 1 | 3 | 1 | 2 | 2 | 1 |
Week 9 is plain water with no products, to use up what is left in the growing medium; week 10 is harvest. Microbes is added separately, at the dose given above.
BioBizz feeding schedule 2026 for All·Mix
Same logic, manufacturer's values in ml/l. The All·Mix schedule has no Alg·A·Mic, and Bio·Grow stays at 2 ml/l for almost all of flowering.
| Stage | Root·Juice | Bio·Grow | Bio·Bloom | Top·Max | Bio·Heaven | Acti·Vera |
|---|---|---|---|---|---|---|
| Propagation | 4 | 2 | – | – | 2 | 2 |
| Vegetative | 4 | 2 | – | – | 2 | 2 |
| Flowering wk 1 | 2 | 3 | 1 | 1 | 2 | 3 |
| Flowering wk 2 | 2 | 2 | 2 | 2 | 3 | 4 |
| Flowering wk 3 | – | 2 | 3 | 2 | 4 | 5 |
| Flowering wk 4 | – | 2 | 3 | 3 | 5 | 5 |
| Flowering wk 5 | – | 2 | 3 | 3 | 5 | 3 |
| Flowering wk 6 | – | 2 | 4 | 4 | 4 | 3 |
| Flowering wk 7 | – | 2 | 4 | 4 | 4 | 2 |
| Flowering wk 8 | – | 1 | 4 | 4 | 3 | 1 |
Adapting the chart: autoflowers and outdoors
The BioBizz chart is designed for photoperiod plants grown indoors and has no specific guidance for autoflowers. The principle for adapting it:
- Autoflowers: the vegetative stage lasts only a few weeks; move to the “Flowering wk 1” column when the first pistils appear. They are smaller plants: start at the low end of the doses and only increase if new leaves start to pale.
- Outdoors: flowering starts on its own as the days get shorter, in Switzerland usually between late July and August; count the weeks from the first pistils. In open ground rich in compost, reduced doses are often enough.
pH and EC with organic nutrients
BioBizz describes Light·Mix and All·Mix as growing media with a system that helps keep pH in the right range. Measure the solution anyway after adding the products: in soil it should stay between 6.0 and 7.0, in coco between 5.5 and 6.5. The manufacturer recommends Bio·Down for hard water and Bio·Up to raise pH; adjust in small steps, as explained in the guide to cannabis pH water, using pH adjusters.
The 2026 chart gives no EC values. Most organic nutrients are not yet dissolved as salts, so EC underestimates what the plant receives: use it to compare one week with the next, not as a target. New leaves remain the most reliable signal.
Common mistakes: overdosing and mixing
- Starting straight away at full doses: work up to the chart values gradually; if you see burnt tips or very dark green leaves, go back to the previous dose.
- Using Bio·Grow and Fish·Mix together: they are alternatives; combining them gives far more nitrogen than intended.
- Mixing badly: shake the bottles, add the products one at a time to room-temperature water, stirring after each, then measure and adjust pH last.
- Storing the solution: with organic products, only mix what you need for the day.
For the general principles of feeding, see the guide to cannabis nutrients.
Frequently asked questions
When do you start feeding BioBizz on Light·Mix?
The 2026 chart includes Root·Juice and Bio·Grow from propagation, with Bio·Grow at 2 ml/l. With very young seedlings it is better to start lower and increase as growth picks up.
Do you need to adjust pH with BioBizz?
Always measure it, and only adjust it if it falls outside the range: 6.0–7.0 in soil, 5.5–6.5 in coco. BioBizz recommends Bio·Down for hard water and Bio·Up to raise pH.
Does the BioBizz chart work for autoflowers?
Yes, with adjustments: switch to the flowering columns when the first pistils appear rather than at a light change, and stay at the low end of the doses, because autoflowers are smaller.
Can you use BioBizz in coco?
Yes: BioBizz uses the same schedule for Coco·Mix as for Light·Mix. In coco, keep the pH between 5.5 and 6.5 and, with soft water, add CalMag as per the label.
The full range is in the Gro.w.LaB BioBizz nutrients collection.
Updated on 13 October 2026.