Bloom

Zero nitrogen by design. Bloom is pure phosphate, potash, magnesium and sulfur — so you can push the flowering ratio as far as your strain wants it without dragging nitrogen along behind.

That is the point of running a 3-part: during veg your crop wants more nitrogen than P or K, and during flower the reverse. With Grow, Micro and Bloom in three separate bottles, you get to make that shift precisely rather than approximately.

Guaranteed analysis — 0-5-4

• Available phosphate 5.0% · Soluble potash 4.0%
• Magnesium 0.5% water-soluble · Sulfur 1.0% combined
• Derived from monopotassium phosphate, potassium sulfate, magnesium sulfate

How to run it

• After Micro. Grow and Bloom can go in either order; supplements after, one at a time, stirred through.
• Out of direct sunlight, above 48 °F (8.8 °C).

In the bottle: purplish red, water-thin. Shelf life 3 years or more.