Bring your soil back to life — StarTrex inoculates your substrate with beneficial bacteria for vigorous roots in indoor growing.
Hand-picked by BloomLED, indoor-growing and lighting experts for over 10 years.
1.5 kg · 100% organic · 25 g / 5 L · Beneficial bacteria
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BioTabs StarTrex is a 100% natural soil conditioner packed with beneficial bacteria. Mixed into your potting soil, it works directly on the roots, improves soil structure and boosts the uptake of organic fertilizers. A living substrate means stronger plants through both vegetative growth and flowering.

| Specification | Value |
|---|---|
| Brand | BioTabs |
| Type | Soil conditioner / bacterial inoculant |
| Content | 1500 g (1.5 kg) |
| Composition | 100% organic, beneficial soil bacteria |
| Dosage | 25 g per 5 L of soil |
| Use | Indoor growing, soil, organic |
Beneficial bacteria colonise the rhizosphere and stimulate water and nutrient uptake, building a dense, healthy root system.
Unlike sterile substrates, StarTrex reintroduces the microflora your plants need and naturally limits weed development.
By improving soil structure, StarTrex increases the efficiency of your organic fertilizers: less waste, better results.
Mix 25 grams of StarTrex per 5 litres of potting soil before planting. Blend it thoroughly into the substrate to spread the bacteria around the future root zone.
Is StarTrex suitable for organic growing?Yes. StarTrex is 100% natural and fits perfectly into a BioTabs organic program, alongside Mycotrex and Bactrex for complete soil life.
For a complete organic grow, pair StarTrex with Mycotrex mycorrhizae and Bactrex bacteria: the winning trio for living, high-performing soil.