Mammoth P / Microbe Phosphorus Booster - (120mL, 250mL, 500mL, 1L or 4L)

Save $20.49
Mammoth PSKU: MAM120

Size: 120mL
Sale price$89.95 Regular price$110.44
Bulky Item
In stock Usually shipped within 1-3 days.
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Mammoth P is the next big thing in plant growth. This product does exactly what it says on the bottle, and more!

Plants can perform one to two weeks ahead of schedule, cutting down your vegetative cycle and flowering times.

Mammoth P maximises phosphorus and micro nutrient cycling to enhance plant health, resulting in increased vigour, stronger stems and superior growth.

This supplement is perfect for use during the bloom phase. Formulated with a near neutral pH, it is highly effective and clean running in any system.

Our Additives contain some consortia of live microbes that function as self-replicating bioreactors that are 30x better at liberating nutrients than the average microbial community.

Like micro bioreactors, our beneficial bacteria continually produce enzymes that function to mobilize nutrients in the growth medium.

Extensively tested by Colorado growers, and proven to increase growth by independent labs. Mammoth P reduces the need for a separate enzyme additive.

MAMMOTH P naturally accelerates the nutrient supply to plants to increase plant health, quality, and yield.

Use: All stages of plant growth for up to 16% higher yields & 6% Increase stem strength.


  • View our Material Safety Data Sheet


Per Week

  • US (mL/GALLON)……….0.6
  • EU (mL/LITER)…………..0.16


Directions for Use

  • Shake bottle well before each use
  • Mix with water following the weekly application rate

General Use / Purpose of Product

  • MAMMOTH P is specifically designed to increase phosphorus availability during the bloom phase and should be used as a supplement to your regular fertilization program. Application during clone and vegetative phase will boost effectiveness. Mammoth P has a near neutral pH formulation and runs clean in any system.


  • 120mL treats 200 gallons
  • 250mL treats 415 gallons
  • 500mL treats 830 gallons
  • 1000mL treats 1,660 gallons
  • 1 gallon treats 6,300 gallons
  • 5 gallons treats 31,500 gallons
  • 10 gallons treats 63,000 gallons

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    Customer Reviews

    Based on 2 reviews
    Sean M.
    Mammoth p

    Great product plants are loving it, only need tiny amounts of it. Great service as always from the guys at Grow Kings 🤴

    Robyn B.
    What a nice surprise

    I was told about Mammoth & gave it a try & it works! Bigger yield, big solid buds & would recommend this product to any grower. It may seem expensive but beli me, it's totally worth every cent. Buy it!

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