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
How the weeks are numbered
Week numbers restart when flowering begins. The chart opens with your cuttings, counts the vegetative weeks up as Grow 1 to Grow 4, then starts again at Flower 1 on the day you switch the lights, and that is also where HydroGrow stops and HydroBloom starts. Shogun print the vegetative period as a countdown on their own chart — the doses are identical, only the labelling is clearer here.
Every figure is millilitres per 10 litres. Geisha Foliar is a spray on alternating weeks from Grow 1, 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, Cutting 1 to Grow 4
Samurai HydroBloom A&B
From £12.00
10–40ml, Flower 1–7
Katana Roots
From £8.99
50ml soak, then 2ml to Flower 3
Shogun Silicon
From £4.49
10ml, Grow 1 to Flower 7
Shogun CalMag
From £4.49
5–10ml, Grow 1 to Flower 7
Geisha Foliar
From £6.99
Spray, alternate weeks from Grow 1
Sumo Active Boost
From £11.49
10–20ml, Flower 1–8
PK Warrior 9/18
From £6.49
10ml Flower 4, then 5ml to Flower 7
Dragon Force
From £7.49
40ml, Flower 8
Common questions
How are the weeks numbered?
The vegetative weeks count up from your cuttings as Grow 1 to Grow 4, then the numbering starts again at Flower 1 on the day you switch the lights. Shogun number the vegetative stage backwards on their own chart, so their week −6 is Cutting 1 here and their week −1 is Grow 4. If you veg for longer, repeat the Grow 1 and Grow 2 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.