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Metrop MR1 250 ml
Metrop MR1 250 ml is a highly concentrated growth fertiliser with an NPK ratio of 10-40-20, engineered for the vegetative phase and pre-bloom. The exceptionally high phosphorus content drives aggressive root development, establishing the foundation for vigorous above-ground growth. At just 0.4 to 0.75 ml per litre of water, this 250 ml bottle yields up to 625 litres of nutrient solution — making it an efficient entry point into the Metrop system or a practical choice for smaller grow spaces. Compatible with soil, coco, and hydroponic setups. Order from your Belgian grow shop for fast delivery across Europe.
Metrop MR1 250 ml – High-Phosphorus Growth Fertiliser NPK 10-40-20
Root mass is the single best predictor of final yield. Metrop MR1 is formulated around this principle: a 10-40-20 NPK ratio that delivers a phosphorus concentration rarely matched by competing products. The result is rapid, dense root formation from day two of the growth cycle. Explore the full range of Metrop nutrients at Plant and Flower.
Key Performance Specs
- NPK 10-40-20: phosphorus-dominant formulation targeting explosive root development during the vegetative phase.
- Dual nitrogen sources: support both cell structure and chlorophyll production simultaneously.
- Chelated micronutrients + magnesium: accelerate photosynthesis and improve end-product quality.
- Zero dyes, zero water filler: pharmaceutical-grade raw materials only, resulting in 5–10x higher concentration than standard fertilisers.
Application Protocol
Add 0.4 to 0.75 ml of MR1 per litre of feed water. In nutrient-rich soil, apply 1–3 times weekly. For coco, rockwool, or hydroponic systems, dose daily. Use from day 2 of vegetative growth through weeks 3–4 of the bloom cycle. The solution maintains a stable EC after mixing and leaves no residue in reservoirs or drip lines.
Why Start with 250 ml?
This bottle produces 330–625 litres of nutrient solution depending on dosage. It is the practical choice for growers trialling the Metrop system, running a single tent, or supplementing an existing feeding schedule. Pair with Metrop Calgreen 250 ml for calcium fortification and Metrop RhizoXtrem for additional root stimulation.
Transition to Bloom
MR1 handles the vegetative stage and the stretch period. Once full flowering begins, switch to Metrop MR2 (NPK 10-20-40) for its higher potassium ratio. Together, MR1 and MR2 form a complete two-part base programme — biodegradable, dye-free, and requiring no additional supplements for balanced nutrition.
Order Metrop MR1 250 ml from Plant and Flower, your Belgian grow shop with fast shipping. Concentrated performance in a compact format.
What is the correct dosage for Metrop MR1 250 ml?
Add 0.4 to 0.75 ml per litre of feed water. Start at the lower end and increase gradually as plants develop. Due to the high concentration, overdosing is the primary risk — always maintain a low EC and monitor plant response.
Can I use Metrop MR1 as a foliar spray?
MR1 can be applied as a foliar feed during the vegetative phase. Prepare a dilute solution and spray outside of direct light hours to avoid leaf burn. Do not apply foliar sprays once flowers have formed. For root-zone application, follow the standard dosage of 0.4–0.75 ml/L.
Is Metrop MR1 suitable for DWC and other recirculating systems?
MR1 is fully compatible with DWC, NFT, ebb-and-flow, and drip systems. The pharmaceutical-grade ingredients dissolve completely, leaving no residue in reservoirs or plumbing. EC remains stable after mixing. Always combine with Metrop Calgreen in hydroponic setups for adequate calcium supply.
How many litres of feed solution does 250 ml of Metrop MR1 produce?
At the minimum dosage of 0.4 ml/L, a 250 ml bottle produces approximately 625 litres of nutrient solution. At the maximum dosage of 0.75 ml/L, it yields around 333 litres. This makes the 250 ml format cost-effective for small-scale grows or trial runs.
