Emerald Harvest Micro, 55 gal

Micronutrient Anchor of the Grow, Micro, Bloom System, 55 Gal

Emerald Harvest Micro is the micronutrient anchor of the professional Grow, Micro, Bloom 3-part base nutrient series. It supplies nitrogen, phosphorus, and potassium along with a comprehensive chelated trace-element profile — iron, copper, manganese, and zinc — that supports enzymatic and metabolic processes across the plant's entire life cycle. Unlike a simpler 1- or 2-part system, the 3-part format lets a grower adjust each component's ratio independently. Micro is used at a consistent ratio throughout both the vegetative and flowering phases, anchoring the micronutrient foundation that Grow and Bloom build on top of.

The 55-gallon size is built for commercial operations running Micro across a large canopy on a consistent feeding schedule.

Key Features & Benefits

• Nitrogen, phosphorus, and potassium — primary macronutrients that work alongside Grow and Bloom for a complete nutrient spectrum.
• Chelated iron — stays plant-available across a range of pH levels, reducing the risk of micronutrient lockout.
• Copper, manganese, and zinc — essential trace elements that support enzyme function and chlorophyll synthesis.
• Calcium and magnesium — secondary macronutrients important for cell wall integrity and efficient photosynthesis.
• Consistent ratio through both phases — unlike Grow and Bloom, Micro's mixing ratio stays steady across vegetative and flowering stages.

Who Should Use Micro

Micro fits growers running the full 3-part Grow, Micro, Bloom system who want a dedicated micronutrient foundation independent of the macronutrient ratio shifts between Grow and Bloom. It works across any growing medium.

About Emerald Harvest Micro

Micro has anchored the micronutrient side of Emerald Harvest's three-part system since the Santa Rosa, California brand introduced Grow, Micro, Bloom as its original product line in 2015.

Frequently Asked Questions

What role does Micro play in the 3-part system?

Micro supplies the chelated micronutrient foundation — iron, copper, manganese, and zinc — along with calcium, magnesium, and primary macronutrients, mixed alongside Grow and Bloom. Unlike those two, its ratio stays consistent across both vegetative and flowering stages.

How do I mix the three components together?

Add Micro to the reservoir water first, then Grow, then Bloom, mixing thoroughly between each addition. Adding Micro first, before the other concentrated formulas, helps prevent precipitation reactions.

Why does chelated iron matter in Micro?

Chelated iron stays plant-available across a wider pH range than unchelated iron salts, which reduces the risk of an iron deficiency caused by pH-related lockout in the root zone. That's especially relevant in hydroponic systems where pH can drift.

Can Micro be used on its own without Grow and Bloom?

No, Micro is one component of the 3-part system and isn't a complete standalone nutrient. It's intended to be mixed with Grow and Bloom for the full macro- and micronutrient profile.

Does the Micro ratio change between vegetative and flowering stages?

No, unlike Grow and Bloom, which shift ratio as the plant moves from vegetative growth into flowering, Micro is used at a consistent ratio across both phases. That's what makes it the micronutrient anchor of the system.