Supercharged roots, stronger plants — HydroPassion MC4 colonises young roots from day one for maximum NPK and micronutrient uptake.
Curated by BloomLED, French indoor-grow specialist with 10+ years of expertise for serious growers.
5g · 400 spores/L · 0.1g/L · Endomycorrhizae
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HydroPassion MC4 is a concentrated endomycorrhizal inoculant hand-picked by BloomLED for indoor growers who want to transform their root zone into a nutrient-absorbing powerhouse. Applied at planting or transplanting, it forms a long-lasting symbiosis with your plants and dramatically increases their ability to take up water, NPK and micronutrients.

| Specification | Value |
|---|---|
| Type | Endomycorrhizal inoculant (spores) |
| Format | 5 g concentrated powder |
| Concentration | ≈ 400 spores per 1 L of water |
| Dosage | ≈ 0.1 g per litre of watering water |
| Stages | Cuttings, seedlings, transplant |
| Brand | HydroPassion (curated by BloomLED) |
Mycorrhizal hyphae massively extend the absorption surface of your roots and unlock phosphorus, potassium and trace elements that are usually stuck in the substrate.
The symbiosis shields the rhizosphere against Pythium, Fusarium and watering stress. Your plants sail through transplants and high-pressure growth phases.
Faster root colonisation means instant recovery after planting, more vigorous vegetative growth and a noticeable bump in bloom potential.
Dissolve 0.1 g of powder per litre of water in a watering can. Stir gently to avoid lumps, then water your plants directly at the base, right after planting or transplanting. A single application per cycle is enough for most setups.
Is MC4 compatible with my nutrient schedule and watering system?Yes. MC4 is compatible with most mineral and organic nutrient programmes. Just avoid systemic root fungicides right after application so the colonisation can establish. Suitable for soil, coco and passive hydroponics.
One gram of MC4 inoculates around ten young plants — a tiny investment for a root system that lifts the whole cycle.