Feed tank
Reservoir nutrient batch — scales any recipe to your tank. Foliar sprays live in their own tab.
Recipe
Mother & Veg
Growth stage i
Target EC 3.0
0.52.254.0
Tank size i
L
Source water EC i
mS/cm
Target pH i
Base nutrients · dosed by EC chart i
Stage picks the products. Athena runs a hard Grow→Bloom switch (never both at once) and swaps Core→Fade for the last 2 weeks — so A-parts and B-parts are pick-one.
Supplements i
Balance · pH buffer i
Blended rate ml / 10 L
Cleanse · in reservoir i
Top-up running tank
what-if
Tank EC now
mS/cm
Uses the tank size, target EC & products above. Tells you what to add to raise EC — or how much water to dilute if you're over.
Foliar spray
Separate spray tank — IPM, Stack foliar, Cleanse foliar. Never goes in the fertigation reservoir.
Spray tank
Spray volume i
L
Preset i
Products & rates
Spray SOP
Stock tanks
Build concentrate stocks for dosing pumps, and plan how long each tank lasts before a refill.
Concentrate builder
A/B stock
Product i
Stock tank size
L
Target strength i
Tank life / refill date
depletion
Stock tank size
L
Stock strength g / L
Product in this tank
How do you feed? i
Batch tank size
L
Batches per day
Feed EC 3.0
Start date i
pH correction
Estimate how much Balance to add to hit your target pH. Learns from your own tanks to get sharper over time.
How much Balance?
estimate
Tank size
L
Feed EC 3.0 i
Current pH
Target pH
Balance product
Calibrate i
seed model
After a real correction, log what actually happened — the estimator tunes to your water & products for this profile.
Balance added
ml
pH moved to
More
Cleaning protocols, saved recipes, history, settings and the walkthrough.
Cleaning & sanitation
Cleanse
Saved recipes
Saves the Feed-tab recipe to this browser. Tap to load, or the delete icon to remove.
History
No calculations yet.
Settings
PPM scale i