Emerald Harvest Cali Pro Bloom B 1-4-6 | 2.5gal

Cali Pro Two-Part Bloom System Part B Providing 1-4-6 NPK for the Flowering Phase (2.5gal)

Emerald Harvest Cali Pro Bloom B 1-4-6 is Part B of the Cali Pro two-part base nutrient system for the bloom phase. Used together with Cali Pro Bloom A (3-0-3), it delivers a complete base nutrient program for the flowering and fruiting phase. The Cali Pro system is designed for growers who want an easy-to-use two-part system that delivers consistent, professional-level results.

The 2.5gal size suits medium-scale growers and home cultivators who run the Cali Pro Bloom system through a full flowering cycle and want a larger supply of Bloom B between resupply.

Key Features & Benefits

• Part B of Two-Part Bloom System — Used together with Cali Pro Bloom A (3-0-3) to form a complete two-part base nutrient for the bloom phase.
• 1-4-6 NPK — Provides low nitrogen, high phosphorus, and high potassium — Part B's role in the balanced two-part Bloom system.
• High Phosphorus and Potassium for Bloom — The 1-4-6 ratio supplies phosphorus and potassium critical to bloom development and fruiting.
• For Hydroponic and Other Growing Media — Suited for hydroponic systems, coco coir, and a wide range of growing media.
• Flexible Feeding Program — Can follow the label feeding schedule or be incorporated into a custom nutrition program.

Who Should Use Emerald Harvest Cali Pro Bloom B 1-4-6

Cali Pro Bloom B 1-4-6 suits hydroponic growers, indoor cultivators, and commercial plant producers who use the Cali Pro two-part base nutrient system during the bloom phase. It is used alongside Cali Pro Bloom A (3-0-3) as a complete base nutrient program for the flowering and fruiting phase of plant growth.

The Role of Part B in Two-Part Bloom Nutrition

In a two-part base nutrient system, Part B typically supplies the phosphorus, potassium, and secondary/micronutrients that would react with the calcium or magnesium in Part A if combined in concentrated form. Cali Pro Bloom B (1-4-6) provides the high-phosphorus, high-potassium component of the Cali Pro Bloom system. Phosphorus supports bud set and bloom development. Potassium supports plant vigor, water regulation, and fruit quality during the fruiting phase. Together with Cali Pro Bloom A (3-0-3), Bloom B delivers a balanced, complete bloom-phase base nutrient program.

Frequently Asked Questions

Do I need both Bloom A and Bloom B to use the Cali Pro system?

Yes. Cali Pro Bloom B (1-4-6) and Bloom A (3-0-3) are used together as a two-part base nutrient system. Each part contains a portion of the nutrients, and both are required to deliver the complete bloom-phase nutrition program.

What does the 1-4-6 NPK ratio supply in the Cali Pro system?

The 1-4-6 ratio means Bloom B provides 1% nitrogen, 4% phosphorus, and 6% potassium. Together with Bloom A (3-0-3), the combined system delivers nitrogen, phosphorus, and potassium in proportions suited to the bloom and fruiting phase.

Why does Bloom B have higher phosphorus and potassium?

Phosphorus plays a key role in bud set and bloom development. Potassium supports plant vigor, water regulation, and fruit quality. The higher phosphorus and potassium in Part B are oriented toward supporting the flowering and fruiting phase of growth.

Can Cali Pro Bloom B be used in soil or only hydroponics?

Cali Pro is designed for use in hydroponic systems and other growing media including coco coir. Follow current label directions for rates and application methods suited to your growing system.

What is the difference between Cali Pro Bloom and Cali Pro Grow?

Cali Pro Bloom (A + B) is formulated for the flowering and fruiting phase with higher phosphorus and potassium. Cali Pro Grow (A + B) is formulated for the vegetative growth phase with higher nitrogen. Growers switch from Grow to Bloom formula when plants transition to the flowering phase.