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BAC Soil Bloom 1 l
BAC Soil Bloom 1 litre is a highly concentrated 1-component mineral bloom nutrient formulated for the flowering phase in soil substrates. With an NPK ratio of 6-1-4 and premium red chelate iron, this undiluted formula from Dutch manufacturer BAC delivers complete macro and micronutrient coverage for vigorous flower development and healthy maturation. Dosing at 30–45 ml per 10 litres of water with a progressive EC target of 1.8 to 2.2, one litre provides extended coverage for smaller grow spaces. Suitable for container and full-ground cultivation, BAC Soil Bloom is the direct successor to BAC Soil Grow in the BAC mineral feeding schedule. Also available in 5 litres for larger operations. Elevate your bloom results with proven Dutch formulation.
BAC Soil Bloom 1 litre – 1-component mineral bloom nutrition for soil
The flowering phase demands precision nutrition, and BAC Soil Bloom 1 litre delivers exactly that. This undiluted 1-component mineral formula from BAC carries an NPK ratio of 6-1-4, specifically calibrated for the generative stage in soil substrates. Enriched with premium red chelate iron and a complete trace element profile, this Dutch-manufactured bloom nutrient provides everything your plants need to transition from vegetative growth into productive flowering without the complexity of A&B dosing.
NPK 6-1-4 — engineered for generative performance
BAC's approach to bloom nutrition differs from many competitors in one critical aspect: the retention of meaningful nitrogen levels during flowering. While some bloom formulas strip nitrogen to near-zero, BAC maintains sufficient N to keep the canopy photosynthetically active throughout the bloom cycle. This ensures flowers receive a continuous energy supply from healthy leaves, while phosphorus and potassium drive flower formation, cell expansion, and fruit maturation. The complete formula is enhanced with red chelate iron, which maintains bioavailability across a wider pH range than conventional green DTPA chelates.
- Balanced bloom nutrition: NPK 6-1-4 supports both canopy health and flower development simultaneously.
- Red chelate iron: premium trace element form exclusive to the BAC mineral range, ensuring consistent micronutrient uptake.
- Undiluted formulation: maximum nutrient density per millilitre means efficient dosing and extended bottle life.
- Vegan certified: BAC was the first Dutch plant nutrition manufacturer to achieve Vegan certification across its range.
Application and EC management during bloom
Dose BAC Soil Bloom at 30 to 45 ml per 10 litres of water with every feed throughout the flowering period. The target EC ramps progressively from 1.8 in early bloom to 2.2 during peak flowering, matching the plant's increasing nutritional demand as flowers develop and mature. Calibrated EC and pH meters are essential for dialling in optimal concentrations. BAC Soil Bloom follows directly from BAC Soil Grow in the mineral feeding schedule, creating a seamless nutritional transition from vegetative to generative phase.
For whom is BAC Soil Bloom the right choice?
This 1-litre format is sized for growers with compact indoor spaces, hobby cultivators testing the BAC mineral line, or those running a single plant cycle who want professional-grade bloom nutrition without overcommitting on volume. The concentrated formula ensures that even a single litre provides substantial coverage. To push flower production further, pair BAC Soil Bloom with the BAC Bloom Stimulator for enhanced flower set, and introduce BAC Final Solution in the final week for a thorough substrate flush that contributes to cleaner end product quality. For growers operating at larger scale, the 5-litre format of BAC Soil Bloom offers improved cost efficiency.
Order BAC Soil Bloom 1 litre from our Belgian growshop for fast shipping across Belgium. Dutch-engineered bloom nutrition, built for growers who want measurable results from their flowering phase.
What is the recommended dosage for BAC Soil Bloom?
Dose BAC Soil Bloom at 30 to 45 ml per 10 litres of water, administered with every watering throughout the flowering phase. Start at the lower end in early bloom and increase gradually as flowers develop. Target an EC of 1.8 initially, ramping up to 2.2 during peak bloom. Always verify with a calibrated EC meter.
When should I switch from BAC Soil Grow to BAC Soil Bloom?
Switch to BAC Soil Bloom when your plants enter the flowering phase, typically triggered by a change in light schedule for photoperiod varieties. The BAC feeding schedule available on the manufacturer's website provides detailed week-by-week dosing for both growth and bloom phases to guide the transition precisely.
Can BAC Soil Bloom be used on coco or hydro substrates?
BAC Soil Bloom is formulated specifically for soil substrates. For coco and hydroponic systems, BAC offers dedicated A&B bloom nutrients — BAC Coco Bloom A/B and BAC Hydro Bloom A/B — which are engineered for the specific buffering and nutrient delivery requirements of inert substrates.
What makes red chelate iron better than standard iron in bloom nutrients?
Red chelate iron maintains its molecular stability across a broader pH range compared to conventional green DTPA chelates. During the bloom phase, when substrate pH can fluctuate due to higher nutrient concentrations and metabolic activity, this stability ensures that iron and associated trace elements remain plant-available, supporting consistent flower quality throughout the cycle.
