Emerald Harvest Cali Pro Grow A 3-0-0 | 1gal - (Case of 4)

Part A of a Two-Bottle Vegetative Base Nutrient System, 1gal

A single-bottle base nutrient has to pack every macronutrient into one concentrate, which limits how the manufacturer can balance ions that don't always play well together at high concentration. Emerald Harvest splits its Cali Pro vegetative-phase nutrition across two bottles instead, and Cali Pro Grow A 3-0-0 is the first half of that pair, paired with Cali Pro Grow B 2-2-5 to deliver complete nutrition for the vegetative phase.

The 1gal size, sold as a case of 4, fits growers feeding a full vegetative cycle across more containers who want a larger on-hand supply of Grow A.

Key Features & Benefits

• Two-bottle vegetative system — Grow A is one half of a matched pair with Grow B rather than a complete standalone feed.
• Formulated for ion separation — keeps certain nutrients apart in concentrate to avoid the reactions a single-bottle formula has to work around.
• Vegetative-phase focus — built specifically for the growth stage before flowering, not the full crop cycle.
• Pairs with Cali Pro Grow B 2-2-5 — the two bottles together deliver a complete vegetative base nutrient program.
• Flexible feeding — usable on the Emerald Harvest label schedule or adapted into a custom feeding program.

Who Should Use Cali Pro Grow A 3-0-0

This half of the pair fits growers who've chosen Emerald Harvest's two-bottle Cali Pro system for the vegetative phase over the brand's original three-bottle Grow, Micro, Bloom line.

About Emerald Harvest

Emerald Harvest, founded in 2015 in Santa Rosa, California, built its Cali Pro line as a two-part base nutrient system alongside its original three-part Grow, Micro, Bloom formulas. The company designed Cali Pro Grow A and its Grow B counterpart for growers who prefer a two-bottle vegetative feed over a three-bottle one.

Frequently Asked Questions

Do I need Cali Pro Grow B along with this product?

Yes, Grow A is only half of the vegetative base nutrient pair; Grow B 2-2-5 supplies the rest of the nutrient profile. Using Grow A alone leaves out nutrients that Grow B is formulated to provide.

Why does Emerald Harvest split vegetative nutrition into two bottles?

Splitting nutrients across two concentrates lets certain ions stay separated until they're diluted in the reservoir, avoiding reactions that can occur when incompatible nutrients sit together at high concentration in a single bottle. It's a different tradeoff from a single-bottle system, which prioritizes simplicity over that separation.

How do I use Grow A and Grow B together?

Add both parts to your reservoir per the Emerald Harvest label feeding schedule, mixing each into water separately rather than combining them at full concentration before dilution. Growers with experience running the system can also adjust rates into a custom feeding program.

Is Cali Pro compatible with Emerald Harvest's Grow, Micro, Bloom system?

Cali Pro is a separate two-part system rather than a direct swap-in component of the three-part Grow, Micro, Bloom line. Growers generally pick one base system or the other rather than mixing components between them.

What growing media does Cali Pro Grow A work with?

It's suited for hydroponic systems, coco coir, and other common growing media used during the vegetative phase. Check the Emerald Harvest feed chart for media-specific rate adjustments if you're running something other than a standard hydroponic reservoir.