Shogun PK Warrior 9/18
Shogun PK Warrior 9/18
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup
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Description
A tuned PK boost for the mid-flower push
Shogun PK Warrior 9/18 is a concentrated phosphorus and potassium booster built around a 9% phosphorus, 18% potassium ratio the brand settled on after extensive testing, chosen to maximise potassium uptake without piling on the excess phosphorus of a more common 13/14 blend. It's added to your base feed once flowers start forming, not run as a feed on its own.
Airy, underfed-looking flowers even though you're feeding heavily?
Once flowers start forming, plants pour energy into sugar and resin production, and potassium is central to that process. If the base feed isn't carrying enough phosphorus and potassium at that stage, buds can stay light, loose and slow to swell even on a full schedule. PK Warrior adds concentrated PK alongside plant sterols and organic acids to support that reproductive stage specifically, rather than just pushing more of everything.
Key Benefits
- 9% phosphorus, 18% potassium ratio tuned for flower and fruit development
- Plant sterols and organic acids support the extra PK uptake
- Optimised potassium uptake without the phosphorus oversupply of a 13/14 blend
- Highly concentrated, so a little goes a long way in the reservoir
- Runs alongside your existing base feed rather than replacing it
How to Use
- First week: 1ml/L when flowers or fruits first begin to form
- Thereafter: 0.5ml/L for the following weeks
- Timing: use from around week 4 of flowering for a four-week period
- Reduce base feed: drop base nutrient strength by 20-50% while PK Warrior is in the mix, since plants need less overall feed at this stage even as they drink more
Technical Specifications
- Type: concentrated PK flowering booster
- PK ratio: 9% phosphorus / 18% potassium
- Additional actives: plant sterols, organic acids
- Dose: 1ml/L first week, then 0.5ml/L
- Use window: approx week 4 of flower, for 4 weeks
- Compatible media: soil, coco and hydro
| Stage | Per 1 L | Per 10 L |
|---|---|---|
| First week of use, as flowers begin to form | 1 ml | 10 ml |
| The following weeks, to about week 7 of flower | 0.5 ml | 5 ml |

FREE Express Delivery on orders over £60. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.

