Humboldt Nutrients Big Up Powder - 4 oz - 0-33-23 Bloom Booster

Phosphate and Potash Support for Late Flowering - 4 oz Powder

Plants in flowering draw heavily on phosphorus and potassium, and a base nutrient program does not always keep up. This powder concentrates both: 33% available phosphate (P2O5) and 23% soluble potash (K2O). Phosphorus is involved in energy transfer and root development, while potassium helps regulate water balance in the plant.

The 4 oz size suits hobbyists, small indoor gardens, and growers who want to trial a bloom booster before committing to larger quantities.

Key Features & Benefits

• 0-33-23 analysis — delivers phosphate and potash without nitrogen, which fits the flowering stage.
• Monopotassium phosphate base — a familiar phosphorus and potassium source for bloom-stage feeding.
• Seaweed extract (Ascophyllum nodosum) — included as a derived source in the formula.
• 2% humic acid — listed as a non-plant-food ingredient.
• Soil or hydroponic use — one powder for different growing setups.

Who Should Use Big Up Powder

Growers in flowering or fruiting who want to add phosphorus and potassium to an existing nutrient program, whether in soil or hydroponic systems.

About Humboldt Nutrients Big Up Powder

Humboldt Nutrients makes Big Up Powder as a bloom booster. The label lists 0-33-23, with phosphate and potash derived from monopotassium phosphate and Ascophyllum nodosum. It also contains 2% humic acid. The manufacturer part number is BUP404.

Frequently Asked Questions

Q: What is the nutrient analysis?
A: The analysis is 0-33-23. That means 0% nitrogen, 33% available phosphate (P2O5) and 23% soluble potash (K2O).

Q: When should I use it?
A: It is intended for the flowering stage, when plants have a higher demand for phosphorus and potassium. Follow the label for rates and timing.

Q: Can I use it in hydroponic systems?
A: The manufacturer states it can be used in soil or hydroponic systems. Check the label for mixing directions and confirm your reservoir is compatible.

Q: What does P2O5 mean?
A: P2O5 is the standard way to express phosphate content on a fertilizer label. It shows the amount of phosphorus available to plants.

Q: Does it replace a base nutrient?
A: No. It has no nitrogen, so it supplements a complete nutrient program rather than replacing it.

Q: Where does the humic acid come from?
A: The label lists humic acid at 2% as a non-plant-food ingredient, derived from leonardite.