Shogun Hydro Feed Chart – Samurai Hydro Doses
Shogun's own published Samurai Hydroponics schedule, for active hydroponic systems. Week by week, in millilitres per 10 litres of water.
- All dosesper 10 litres
- pH5.5 – 6.5
- Base feedHydroGrow then HydroBloom
- Run6 weeks veg, 8 flower
How the weeks are numbered
Shogun count backwards through the vegetative stage and forwards through flower. Week −6 is your cuttings going in; week 1 is the switch to flower, and that is also where HydroGrow stops and HydroBloom starts.
| Week | Stage | HydroGrow A&B | HydroBloom A&B | Katana Roots | Silicon | CalMag | Sumo Boost | PK Warrior | Dragon Force | Conductivity |
|---|---|---|---|---|---|---|---|---|---|---|
| −6 to −5 | Cuttings | 10–20ml | – | 50ml | – | – | – | – | – | 8–10 |
| −4 to −3 | Veg | 10–20ml | – | 2ml | 10ml | 5–10ml | – | – | – | 8–13 |
| −2 to −1 | Veg | 20–30ml | – | 2ml | 10ml | 5–10ml | – | – | – | 13–18 |
| 1 to 3 | Flower | – | 30–40ml | 2ml | 10ml | 5–10ml | 10–20ml | – | – | 13–20 |
| 4 | Flower | – | 20–30ml | – | 10ml | 5–10ml | 20ml | 10ml | – | 15–23 |
| 5 | Flower | – | 15–20ml | – | 10ml | 5–10ml | 20ml | 5ml | – | 11–16 |
| 6 to 7 | Flower | – | 10–20ml | – | 10ml | 5–10ml | 15–20ml | 5ml | – | 11–16 |
| 8 | Flower | – | – | – | – | – | 10ml | – | 40ml | – |
| Final week | Finish | – | – | – | – | – | – | – | – | – |
Every figure is millilitres per 10 litres. Geisha Foliar is a spray on alternating weeks from −4, and Sumo Boost Foliar is a separate 2ml per litre spray in flower weeks 1 and 3 — that one is a spray dilution and must not go in the tank. Conductivity is the nutrients only; add your own tap water reading on top.
Getting it right
- Never premix the concentrates. Each bottle goes into the water on its own.
- Silicon goes in first, and separately. Pre-mix it in 5 litres and pH that to about 6.5 before it joins the tank.
- HydroGrow and HydroBloom never overlap. Grow stops at the switch to flower; Bloom takes over.
- Katana Roots drops from 50ml to 2ml once the cuttings are away — that first figure is a soak rate.
- PK Warrior means cutting the base. Drop the HydroBloom by 25 to 50% while it runs, and stop it before Dragon Force starts.
- Watch the reservoir, not just the chart. In an active system the solution concentrates as the plants drink — top up and check the conductivity rather than trusting the week number.
Everything on the chart
Samurai HydroGrow A&B
From £12.00
10–30ml through veg
Samurai HydroBloom A&B
From £12.00
10–40ml through flower
Katana Roots
From £8.99
50ml soak, then 2ml
Shogun Silicon
From £4.49
10ml, pre-mixed separately
Shogun CalMag
From £4.49
5–10ml, veg through flower
Geisha Foliar
From £6.99
Spray, alternating weeks
Sumo Active Boost
From £11.49
10–20ml through flower
PK Warrior 9/18
From £6.49
10ml at week 4, then 5ml
Dragon Force
From £7.49
40ml at week 8
Shogun Zenzym
From £6.49
Keeps the root zone clean
Shogun Start
From £5.49
For seedlings and cuttings
Propagation Starter Kit
From £10.49
Katana Roots and Start
Common questions
Why do the weeks start at minus six?
Shogun number the vegetative stage backwards so week 1 is always the switch to flower. If you veg for longer, repeat the −4 to −3 figures.
Hard water or soft water?
Shogun sell the Hydro line in separate hard water and soft water formulations. On RO, rainwater or a soft mains supply take the soft water version and add CalMag back.
Coco or soil instead?
Shogun publish a separate chart for each. See the Samurai Coco chart and the Samurai Terra soil chart.
What is target conductivity?
The EC of the nutrients and additives on their own, in the units Shogun print. Add your own tap water reading on top — the chart does not include it.
Figures as published by Shogun on their own feed chart, shogunfertilisers.com. Always read the label on the bottle you own. Shogun is a trade mark of its owner.