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Metrop MR1 1 l
Metrop MR1 1 litre delivers concentrated growth nutrition at an NPK of 10-40-20 for growers operating at scale. This single bottle produces up to 2,500 litres of nutrient solution, making it the most cost-efficient option for multi-cycle operations and larger grow rooms. The high phosphorus ratio drives massive root development, while dual nitrogen forms and chelated micronutrients ensure rapid vegetative growth and optimised photosynthesis. No dyes, no water filler — only pharmaceutical-grade raw materials. Works across all substrates and irrigation systems. Order now from your Belgian grow shop with fast European shipping.
Metrop MR1 1 Litre – Concentrated Growth Fertiliser for Maximum Root Development
In precision horticulture, every input must justify its cost per gram of yield. Metrop MR1 1L delivers on that metric: a NPK 10-40-20 concentrate that produces up to 2,500 litres of feed solution from a single bottle. No fillers, no dyes, no wasted volume — just nutrient density engineered for performance. Browse the complete Metrop product line at Plant and Flower.
The Science Behind NPK 10-40-20
Phosphorus drives root architecture. In any plant, the majority of assimilated phosphorus resides in the root system. A fertiliser front-loaded with phosphorus during the vegetative phase produces a denser, more efficient root network — translating directly into greater nutrient uptake capacity during bloom. Metrop MR1 pairs this high-phosphorus approach with:
- Two nitrogen forms: ammoniacal and ureic nitrogen for balanced foliage growth and structural integrity.
- Magnesium: the central atom in chlorophyll, critical for photosynthetic efficiency.
- Chelated trace elements: bioavailable micronutrients supporting enzyme production, hormone synthesis, and overall plant vitality.
Dosage and Application
Add 0.4–0.75 ml per litre of irrigation water. On nutrient-rich substrates, apply 1–3 times per week. On inert media or hydroponic systems, dose daily. Begin on day 2 of the vegetative cycle and continue through week 3–4 of bloom. Shake well before each use — the concentrated formula may form crystals during storage.
Cost Analysis: 1 Litre vs Smaller Formats
At 0.4 ml/L dosage, 1 litre of MR1 produces 2,500 litres of feed solution. At 0.75 ml/L, it still delivers over 1,330 litres. For growers running multiple cycles per year or managing more than a few square metres of canopy, the per-litre cost advantage is significant. Pair with Metrop Calgreen 1L for calcium supplementation and Metrop AminoXtrem 1L for bloom-phase stimulation.
Integration with the Metrop Feed Schedule
MR1 serves as the base fertiliser from early vegetative growth through the stretch period. Once flowering is fully established, transition to Metrop MR2 1L (NPK 10-20-40) for its potassium-heavy formulation. The two products form a complete base programme — biodegradable, free from harmful additives, and optimised through SAP analysis for maximum nutrient efficiency.
Order Metrop MR1 1L from Plant and Flower — fast shipping across Belgium and competitive pricing on all professional grow nutrients.
Why is Metrop MR1 so much more concentrated than other growth fertilisers?
Metrop sources pharmaceutical-grade raw materials and does not dilute with water or add dyes. This enables a higher NPK ratio per millilitre than conventional products. The practical benefit: lower dosage per litre of feed, reduced shipping weight, and less plastic waste per grow cycle.
What EC should I target when using Metrop MR1 1L?
Metrop recommends maintaining a low EC due to the high concentration of the product. Start at the lower dosage of 0.4 ml/L and measure EC after mixing. Increase gradually while monitoring plant response. The formula is designed to keep EC stable once prepared, with no drift over time.
Can Metrop MR1 be used together with AminoXtrem and Calgreen?
MR1 is fully compatible with all Metrop products. During the vegetative phase, combine MR1 with Calgreen for calcium and additional nitrogen. Add AminoXtrem when transitioning into bloom for amino acid-based flower stimulation. In hydroponic setups, Calgreen alongside MR1 is strongly recommended.
Does Metrop MR1 have an expiry date?
No. Because MR1 contains no water filler, it does not oxidise or degrade after opening. Store in a dark, frost-free location between 5–40 °C. The concentrated formula may crystallise — shake thoroughly before each use to re-suspend all active ingredients.
