Emerald Harvest Cali Pro Grow B 2-2-5 | 2.5gal

Part B of a Two-Bottle Vegetative Base Nutrient System, 2.5gal

Cali Pro Grow B 2-2-5 is the second half of Emerald Harvest's two-bottle vegetative base nutrient pair, formulated to supply the portion of the nutrient profile kept separate from Grow A 3-0-0 until both are diluted together in the reservoir. Used on its own, Grow B doesn't deliver a complete feed; it's built specifically to run alongside Grow A.

The 2.5gal size suits growers running enough plants through the vegetative phase to need more than a gallon between reorders.

Key Features & Benefits

• Companion to Cali Pro Grow A — the second half of a matched two-bottle vegetative pair.
• 2-2-5 nutrient profile — supplies the portion of vegetative nutrition kept separate from Grow A until dilution.
• Vegetative-phase formulation — built for the growth stage before flowering rather than the full cycle.
• Reservoir-mixed compatibility — designed to combine safely with Grow A once both are diluted.
• Flexible feeding schedule — follows the Emerald Harvest label chart or an adjusted custom program.

Who Should Use Cali Pro Grow B 2-2-5

This half of the pair fits the same growers using Cali Pro Grow A -- anyone running Emerald Harvest's two-bottle vegetative system rather than its three-bottle Grow, Micro, Bloom line.

About Emerald Harvest

Emerald Harvest's Cali Pro two-part system, developed since the company's 2015 founding in Santa Rosa, California, splits vegetative-phase nutrition across a Grow A and Grow B bottle rather than the three-bottle format used in its original Grow, Micro, Bloom line.

Frequently Asked Questions

Can I use Grow B by itself without Grow A?

No, Grow B supplies only part of the vegetative nutrient profile; Grow A 3-0-0 provides the rest. The two are designed to be used together rather than as interchangeable standalone feeds.

What's in the 2-2-5 ratio that Grow A doesn't provide?

The 2-2-5 ratio adds phosphorus and a higher potassium level than Grow A supplies on its own, rounding out the vegetative nutrient profile once both parts are combined in the reservoir. Splitting the ratio this way is part of how the two-bottle system separates ions that don't need to coexist at full concentration.

How do I mix Grow A and Grow B safely?

Add each part to your reservoir water separately rather than combining them together at full strength first, following the Emerald Harvest label feeding schedule for rates. This keeps the ion-separation benefit of the two-bottle format intact.

When should I switch from Cali Pro Grow B to Cali Pro Bloom B?

Switch when your plants move from the vegetative phase into flowering, pairing Cali Pro Bloom A and Bloom B in place of the Grow pair at that point. The Emerald Harvest feed chart lays out the timing for that transition.

Is Grow B suited to coco coir as well as hydroponic reservoirs?

Yes, it's formulated to work across hydroponic systems, coco coir, and other common vegetative-phase growing media. Check the feed chart for any media-specific rate adjustments.