General Hydroponics KoolBloom - 16 lb

Late-Cycle Phosphorus and Potassium Boost - 16 lb Supply

Flowering plants draw heavily on phosphorus and potassium, and a base nutrient program alone may not supply enough at the end of the cycle. KoolBloom is a concentrated supplement that adds both elements, along with ripening elements, to support flowering and ripening. It layers onto the feed program you already run.

The 16 lb size suits growers who feed bloom-phase additives regularly across several cycles or multiple rooms. A single purchase keeps a bloom additive on hand for ongoing feeding.

Key Features & Benefits

• Concentrated formula — a small amount goes into each batch of nutrient solution.
• Phosphorus and potassium rich — targets the elements flowering plants rely on.
• Ripening elements — supports ripening at the end of the cycle.
• Additive format — works alongside your base nutrients rather than replacing them.

Who Should Use KoolBloom

Growers running hydroponic systems or other indoor cultivation who want a bloom-phase additive for annual flowers and herbs. It suits home gardeners and commercial operations that already use a base nutrient program.

About General Hydroponics KoolBloom

General Hydroponics KoolBloom is a highly concentrated nutrient supplement for flowering and ripening in annual flowers and herbs. It is intended for use only at the very end of a plant's life cycle to help build larger, heavier fruits and flowers.

Frequently Asked Questions

Q: When should I use KoolBloom?
A: Use it only at the very end of the plant's life cycle, during bloom. Follow the product label or the manufacturer's feed chart for timing.

Q: Does it replace my base nutrients?
A: No. It is an additive that goes on top of a base nutrient program. It raises phosphorus and potassium while your base feed continues.

Q: Can I use it during vegetative growth?
A: No. It is meant for the end of the life cycle, not for vegetative growth.

Q: How do I mix it?
A: Mix your base nutrients first, add KoolBloom, and stir thoroughly. Then check pH and EC before feeding.

Q: What does EC mean?
A: EC is electrical conductivity, a measure of the total nutrient strength in your solution. Checking it after mixing helps you avoid overfeeding.