Humboldt Nutrients Big Up Powder - 0-33-23 Bloom Booster - 1 lb

Phosphorus and Potassium for Late-Stage Flowering - 1 lb

Plants need more phosphorus and potassium once flowering begins, and a general feed often falls short of that demand. This powder supplies both in a concentrated form, with 33% available phosphate (P2O5) and 23% soluble potash (K2O) listed in its analysis. Phosphorus comes from monopotassium phosphate, and the formula includes Ascophyllum nodosum.

The 1 lb size suits hobbyists, small indoor gardens and growers who want to trial a bloom booster before committing to a larger supply. It is sold as a single unit.

Key Features & Benefits

• 0-33-23 analysis — delivers phosphorus and potassium with no nitrogen, so you can add it alongside your main flowering feed.
• 33% available phosphate (P2O5) — supports energy transfer and root development during flowering.
• 23% soluble potash (K2O) — supports overall plant health and water balance.
• Monopotassium phosphate and Ascophyllum nodosum — a clearly listed ingredient source for both nutrients.
• Powder form — stores compactly and is mixed into your nutrient solution.

Who Should Use Humboldt Nutrients Big Up Powder

Growers who want extra phosphorus and potassium in the flowering stage, in soil or hydroponic systems, will find it useful. It suits both newer and experienced gardeners who already run a base nutrient program.

About Humboldt Nutrients Big Up Powder

Humboldt Nutrients makes Big Up Powder as a bloom booster. The guaranteed analysis is 0-33-23, with 33% available phosphate (P2O5) and 23% soluble potash (K2O). It also contains 2% humic acid, a non-plant food ingredient derived from Leonardite.

Frequently Asked Questions

Q: What does 0-33-23 mean?
A: The three numbers show nitrogen, available phosphate (P2O5) and soluble potash (K2O) by percentage. This product has no nitrogen, 33% phosphate and 23% potash.

Q: Can I use it in hydroponic systems?
A: The manufacturer describes it for use in both soil and hydroponic systems. Follow the label for mixing and dosing, and check your solution after adding it.

Q: Does it replace my base nutrients?
A: No. It has no nitrogen and does not supply a full range of nutrients. Use it as a supplement alongside your regular feed.

Q: When should I use it?
A: It is designed for the flowering stage, especially the later part of that stage. It is not intended for vegetative growth, which typically needs more nitrogen.

Q: What is humic acid doing in the formula?
A: Humic acid is listed as a non-plant food ingredient at 2%, derived from Leonardite. It is not counted in the nutrient analysis.