Grotek Monster Bloom 0-50-30 PK Bloom Booster – 2.5kg

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A highly concentrated 0-50-30 PK bloom booster formulated to support flower development and ripening during the most demanding stages of bloom.

Grotek Monster Bloom is a powerful powdered flowering supplement formulated with high concentrations of phosphorus and potassium. With a guaranteed analysis of 0-50-30, it is designed to supplement an established feeding programme as plants move through bud formation, flowering and ripening.

The formula is derived from monopotassium phosphate, providing readily soluble phosphorus and potassium without additional nitrogen. These nutrients play important roles during rapid flower development, including supporting plant energy processes, stem strength and the movement of sugars and starches within the plant.

This 2.5kg tub is particularly well suited to commercial growers, nurseries and larger growing facilities using Monster Bloom regularly across significant volumes of nutrient solution.

Why choose Grotek Monster Bloom?

  • Powerful 0-50-30 formulation – provides concentrated phosphorus and potassium without additional nitrogen.
  • Designed for flowering – formulated specifically for bud development, bloom and ripening.
  • Highly concentrated – the published full-strength rate is just 6g per 19L of water.
  • Supports flower development – provides key nutrients during the plant's demanding reproductive stage.
  • Supports ripening – formulated for continued use through the flowering and ripening stages.
  • Water-soluble powder – designed to dissolve readily when preparing nutrient solutions.
  • Large 2.5kg format – a practical option for professional and higher-volume growing operations.

What is Monster Bloom used for?

Monster Bloom is used as a flowering supplement once plants begin forming buds. Its concentrated phosphorus and potassium profile is designed to meet the increased nutritional demands associated with flower development and ripening.

The formula can be incorporated into soil, soilless and water-culture feeding programmes. Grotek specifically lists Monster Bloom as compatible with hydroponic systems and soilless growing media including peat and coco.

Monster Bloom is a specialist bloom enhancer rather than a complete base nutrient. Use it as part of an appropriate fertiliser programme to supplement the plant's nutrition during flowering.

How to use Grotek Monster Bloom

Begin using Monster Bloom when buds are forming. For soil, soilless and water-culture applications, mix 6g per 19 litres of water, equivalent to approximately 0.32g per litre.

Grotek recommends using Monster Bloom with fertiliser applications during the blooming cycle. Because the formula is highly concentrated, measure the powder accurately before adding it to the solution and mix thoroughly.

Continue through the flowering and ripening stages, then discontinue use 1 – 2 weeks before harvest.

Grotek Monster Bloom 2.5kg product details

Product Grotek Monster Bloom
Product type PK bloom enhancer
Size 2.5kg
Form Water-soluble powder
Guaranteed analysis 0-50-30
Available phosphoric acid (P₂O₅) 50%
Soluble potash (K₂O) 30%
Derived from Monopotassium phosphate
Application rate 6g per 19L of water
Approximate rate per litre 0.32g/L
Growth stage Flowering & ripening
Suitable systems Soil, soilless & water culture
Compatible media Including peat & coco
Complete base nutrient No – use as a flowering supplement within an appropriate feeding programme

Grotek Monster Bloom FAQs

What is Grotek Monster Bloom used for?

Grotek Monster Bloom is a concentrated PK bloom enhancer used during bud development, flowering and ripening. It supplies high levels of phosphorus and potassium to supplement an established plant nutrition programme during flowering.

What is the NPK of Grotek Monster Bloom?

Grotek Monster Bloom has a guaranteed analysis of 0-50-30, providing 50% available phosphoric acid and 30% soluble potash with no added nitrogen.

When should I start using Monster Bloom?

Begin applying Monster Bloom when buds are forming. It is designed specifically for the flowering and ripening stages rather than vegetative growth.

How much Grotek Monster Bloom should I use?

Grotek's published full-strength application rate is 6g per 19 litres of water for soil, soilless and water-culture growing. This is approximately 0.32g per litre.

How long should I use Monster Bloom?

Use Monster Bloom during the blooming cycle once buds have started forming. Grotek recommends discontinuing use 1 – 2 weeks before harvest.

Can Grotek Monster Bloom be used in hydroponics?

Yes. Monster Bloom is suitable for water-culture and hydroponic growing systems when mixed at the appropriate application rate.

Can Monster Bloom be used with coco?

Yes. Grotek lists Monster Bloom as compatible with soilless growing media including coco and peat.

Is Monster Bloom a complete fertiliser?

Monster Bloom is designed as a concentrated flowering supplement rather than a complete base feeding programme. Use it alongside suitable plant nutrition for the crop and growing stage.

What is Grotek Monster Bloom made from?

Grotek states that Monster Bloom is derived from monopotassium phosphate, which supplies the product's concentrated phosphorus and potassium.

How much nutrient solution can 2.5kg of Monster Bloom make?

At Grotek's published rate of 6g per 19 litres, a 2.5kg tub is sufficient for approximately 7,900 litres of working solution.

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£87.84