Bloom Additive / Nutrients

FloraFlex B1 + B2 Bloom Combo

Two-part bloom nutrients for hydroponic fruiting crops

FloraFlex B1 and B2 are engineered to support the bloom phase of fruiting crops like tomatoes, peppers, cucumbers, and strawberries. This two-part combo delivers clean, high-performance nutrition during flowering and fruit set — helping plants transition smoothly from vegetative growth into productive bloom.

If you're growing a dedicated single-crop system (like tomatoes only), B1 + B2 will fully replace V1 + V2 once your plants begin to flower. But if you're running a mixed crop system — for example, lettuce and tomatoes together — you'll continue using V1 + V2 as your base, and add B1 + B2 as a bloom-phase supplement tailored to your fruiting plants.

To learn exactly how to dose B1 and B2 in mixed systems, use our UGrowFood Nutrient Calculator and select “plants are flowering.” This will unlock crop-specific bloom guidance based on your system size and EC targets.

Why growers choose B1 + B2

• Tailored bloom nutrition: B1 (14-0-22) and B2 (0-28-18) deliver the phosphorus and potassium your fruiting crops need to thrive.
• Clean, stable mixing: Two-part separation prevents cloudiness and solids — ideal for small reservoirs and recirculating systems.
• Compatible with food crops: Originally designed for cannabis, now adapted for tomatoes, peppers, cucumbers, strawberries, and more.
• System safe: Works well in AeroGarden-style units, DWC, Kratky, NFT, and recirculating hydroponic setups.
• Calculator-supported: Fully integrated into our UGrow Nutrient Calculator for precise bloom-phase dosing.

How to use B1 + B2

Use B1 and B2 together during the bloom phase of fruiting crops. For most home hydroponic systems:

• Single-crop systems: Switch from V1 + V2 to B1 + B2 when flowering begins.
• Mixed-crop systems: Continue using V1 + V2 as your base, and add B1 + B2 only for the fruiting crops.
• Mixing: Always dissolve each part separately in water and follow the included instructions to prevent cloudiness or solids.

For tailored bloom-phase instructions, visit our UGrow Nutrient Calculator and select “plants are flowering.”

NOTE: This is a combo product. A single order will give you 1lb of B1 and 1lb of B2