Athena Stack - Blended Line
Athena Stack - Blended Line
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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
One kelp-based additive for potassium top-ups, transplants and seed starts
Athena Stack is a natural plant nutrient made from kelp extract that gives plants the tools to reach their full genetic potential across several jobs in one bottle. As a foliar spray it corrects minor potassium deficiencies; at transplant it reduces stress on vulnerable young roots; and as a seed soak it supports germination and early vigour. It contains organic ingredients, so expect some separation in storage - shake well before use.
Fixing minor potassium deficiencies and transplant stress
Potassium shortfalls and the stress of transplanting or germinating can quietly hold back growth even when the rest of your feed is dialled in. Stack's kelp base addresses minor potassium deficiencies as a foliar, and reduces transplant stress when used as a root soak or watered in.
Key Benefits
- Corrects minor potassium deficiencies - effective as a weekly foliar spray
- Reduces transplant stress - improves vigour as a root soak or post-transplant drench
- Supports germination - may lift germination rates and early vigour as a seed treatment
- Kelp-extract based - contains organic ingredients; shake well before use
- Irrigation-safe - suitable for fertigation as well as foliar application
How to Use
- General window: the final week of veg up to week 3-5 of flower, stopping once vertical stretch has finished. That is the whole period Stack is useful in
- Foliar spray: mix 7ml per gallon of water and spray thoroughly once weekly through that window. Spray with lights off and let foliage dry before the lights return
- Transplant: mix 2ml per gallon and bare-root soak for 30-60 seconds before transplanting, or water in afterwards
- Seed treatment: mix 4ml per gallon and soak seed for 1-2 minutes before planting
- When to stop: once the plant has stopped stretching upward. There is nothing to gain from carrying on past that point
Technical Specifications
- Type: kelp-extract vegetative supplement
- Range: Athena Blended Line
- Uses: foliar, transplant soak, seed treatment
- General window: last week of veg to flower week 3-5
- Foliar rate: 7ml per gallon, weekly
- Transplant rate: 2ml per gallon
- Seed rate: 4ml per gallon
- Composition: organic ingredients, may separate - shake before use
| Application | Per 1 L | Per 10 L |
|---|---|---|
| Foliar spray, weekly, lights off | 1.85 ml | 18.5 ml |
| Transplant soak or post-transplant drench | 0.53 ml | 5.3 ml |
| Seed soak, 1 to 2 minutes before planting | 1.06 ml | 10.6 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.

