In StockIntense Pro Series - PK Ultra
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Description
High-Strength Flowering Booster for Bigger, Better Yields
Intense Pro Series – PK Ultra is a concentrated phosphorus and potassium supplement specially formulated to support heavy flowering and fruiting. Ideal for both indoor and outdoor growers, PK Ultra delivers the essential nutrients plants need during the peak of their bloom cycle to maximise flower size, density, and quality.
Suitable for soil, coco, and hydroponic systems, this powerful booster enhances energy transfer within the plant, encouraging stronger fruit and flower development without compromising overall plant health.
Key product benefits:
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High levels of phosphorus and potassium to drive flowering
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Promotes bigger, denser blooms and increased yields
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Improves flower and fruit quality, flavour, and aroma
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Supports energy production and nutrient movement within the plant
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Suitable for use in soil, coco, and hydro systems
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Works with any nutrient programme during the bloom phase
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Ideal for use in the mid to late stages of flowering
Directions for use:
Add PK Ultra to your nutrient mix during the flowering phase, following label rates. Best used from the second week of bloom onwards, up to final flush. Always monitor EC levels and adjust accordingly.
Note: Store in a cool, dry place and follow all usage instructions. Do not exceed recommended dosage.
Key facts
| Type | Concentrated phosphorus and potassium booster |
|---|---|
| When | From the second week of bloom up to the final flush |
| Growing medium | Soil, coco and hydro; works with any nutrient programme |
| Storage | Cool and dry |
| Brand | Intense Nutrients |
| Sizes | 250 ml, 1 litre and 5 litres |
| Category | PK Boosters |
How to use
Add PK Ultra to your nutrient mix from the second week of bloom until the final flush, following the rates on the label. Do not go over the recommended dose.
Check the EC of each mix with a pH and EC meter and adjust. It sits in the same Pro Series as Roots Ultra and Silicon Ultra. More boosters are in PK boosters.
Questions
When should I use PK Ultra?
From the second week of bloom up to the final flush.
Does it work with other brands' base feeds?
Yes. It works with any nutrient programme during the bloom phase, in soil, coco or hydro.




