Description
Please note - the Athena Stack in this kit is decanted: Athena no longer supply Stack in this bottle size in the UK, so it is hand-decanted in-store from Athena's own larger branded bottle. It is genuine Athena Stack, measured out into the quantity this kit needs, with none left over sitting unused in your cupboard.
Please Note — Expired UK Stock
The Power Si in this kit is expired. We're telling you this upfront rather than burying it: it's still usable as a foliar feed, past peak potency, which is why it's priced lower than a fresh-stock equivalent. Power Si availability has been affected across the whole UK market recently, so this is the same batch situation most UK sellers are currently working with — if you see it listed elsewhere at full price with no mention of this, it's worth asking whether they're selling the same expired stock without telling you.
The TRIPLE STACK! Happy to bring you the holy trinity at The Hydro Bros. Contact us directly on Instagram for quicker response and custom purchases, or if you've any questions! We deliver to UK, Europe and Beyond!
Save £££ with this triple combo! You get:
Note: Athena® IPW may also be familiar to growers as Athena® IPM. IPW is the international-market version, branded as Integrated Plant Wash to meet differing regulatory and product-classification requirements outside the USA.
The Stack is decanted from 1 gallon bottle (32oz bottles no longer available in UK!)
Spray 7 days before you flip to week 3 of flower, once a week
As a foliar spraying just PowerSi and Athena Stack gives you a faster transition into bloom, combined with tighter internode spacing and increased lateral branching. Adding the IPW ensures your plants stay fit healthy bug free. IPW = INTEGRATED. PLANT. WASH.
See Athenas Feed Schedules for specific application recommendations.
For those that may want some PPFD reference and have an Apogee meter: check out the grow guide by Poetry of Plants
@athena.ag @power.si @thehydrobros #athenanutrients
Comparing Stack, IPW & Power Si Combos?
We stock 4 Athena Stack combos across two sizes. Full comparison below, or jump straight to another option:
Stack + IPW — Small | Stack + IPW — Standard | Stack + Power Si — Standard | Stack + IPW + Power Si — Standard (this kit)
| Combo | Size | Price | Contains |
|---|---|---|---|
| Stack + IPW — Small | 473ml IPW + 120ml Stack (Decanted) | £48.00 | IPW, Stack |
| Stack + IPW — Standard | 0.9L IPW + 0.9L Stack (Decanted) | £135.00 | IPW, Stack |
| Stack + Power Si — Standard | 0.9L Stack (Decanted) + 250ml Power Si | £138.00 | Stack, Power Si (Expired UK Stock) |
| Stack + IPW + Power Si — Standard (this kit) | 0.9L IPW + 0.9L Stack (Decanted) + 250ml Power Si | £195.00 | IPW, Stack, Power Si (Expired UK Stock) |
How much Athena does your grow actually need?
Tell us your medium, pot size and plant count. The Feed Chart Calculator builds your week‑by‑week chart with target EC, works out every bottle for the whole run, and puts them straight in your basket. You can price Athena against seventeen other brands while you are there.
