Plant Care
- • Climate Control & VPD16
- • Disease & Pest Management14
- • Nutrient Solutions & EC34
- • Plant Health Monitoring7
GROW LAB COMPUTATIONAL SUITE
Grow Lab: 31 Empirical Horticultural Calculators & Solvers
Deterministic agronomy models built on peer-reviewed photobiology, fluid dynamics, and stoichiometry. Every answer runs locally in your browser from the same fixed formulas — no paywalls, no sponsor bias, no remote telemetry.
- 31 free tools
- 6 research domains
- 100% client-side
- Zero tracking
FEATURED WORKSPACE · ENGINE 01
Open full VPD calculator
Vapor Pressure Deficit Matrix
Move the chamber inputs and watch the canopy solver respond in real time. The same Tetens math powers the standalone VPD engine.
15 °C35 °C
30 %90 %
−3.0 °C+1.0 °C
Tetens deterministic
VPD = VPsat(Tleaf) − (VPsat(Tair) × RH / 100)
±0.001 kPa
LIVE CANOPY OUTPUT
Vegetative target
0.81
kPa
Leaf VPD — the transpiration signal the plant actually feels.
AIR VPD
1.08 kPa
PPFD COUPLING
550–700 µmol/m²/s
00.81.22.0+
Nothing saved yet this session.
THE ENGINE DIRECTORY
Six domains. 31 deterministic solvers.
Search by name, crop problem, or formula, then filter straight to the suite you need. Every card opens a standalone browser engine.
01
Environment & Microclimate Dynamics
Atmospheric vapor deficit, sensible vs latent heat dissipation, and boundary layer moisture flux.
ENG-10810
Climate & Energy Optimizer — HVAC & Cost Blueprint
A climate and energy optimizer that sizes the HVAC your grow room actually needs and prices the electricity it will burn. It totals the…
Browser-local
Launch Engine
ENG-10798
Climate Controller & HVAC Sizer — VPD, Dehumidifier & CO2 Blueprint
The climate blueprint for the sealed grow room. Room volume, target temperature and humidity, and the lights-on/off swing feed the VPD, dehumidifier, HVAC and…
Browser-local
Launch Engine
ENG-12075
CO2 Enrichment & HVAC Engine
The Pro-level enrichment and safety blueprint for a sealed grow room. Volume, current and target CO2 in — the engine returns the exact kilograms…
Browser-local
Launch Engine
ENG-12088
VPD & Leaf Temperature Engine
True Leaf VPD calculator. Applies the real leaf temperature offset (LEDs run leaves ~2C cooler), altitude pressure correction, dissolved-oxygen risk and air-exchange context so…
Browser-local
Launch Engine
02
Water Chemistry & Fluid Dynamics
Hydrodynamics, Henry's Law saturation, and mineral dissolved solids stoichiometry.
ENG-10807
Dissolved Oxygen Calculator — Saturation & Aeration Blueprint
A dissolved oxygen calculator that starts from the saturation ceiling your water can actually hold — the Benson & Krause 1984 temperature and salinity…
Browser-local
Launch Engine
ENG-12076
Dosing Pump Calibrator — Peristaltic Flow & Timer Blueprint
Dose the reservoir without guessing. Enter the reservoir volume, the EC target and the pump's rated flow — the engine derates that rating through…
Browser-local
Launch Engine
ENG-10790
EC / PPM / CF Converter Hub
One hub for the grow-room numbers games: convert EC (mS/cm), PPM on the 500 / 640 / 700 scales and CF in any direction,…
Browser-local
Launch Engine
ENG-12078
HOCl Solution Maker — Hypochlorous Acid & Bleach Dilution Blueprint
Make an HOCl solution by volume instead of guessing: bleach mL = target ppm × volume ÷ (bleach % × 10 × density) turns…
Browser-local
Launch Engine
ENG-12085
pH & Alkalinity Architect — Buffer Blueprint
pH buffer architect. Runs the carbonate equilibrium and alkalinity titration for your reservoir — then doses the exact mL of acid or base, computes…
Browser-local
Launch Engine
ENG-10805
Reservoir Change Timer — EC Drift & Flush Schedule Blueprint
A hydroponic flush timer that reads your log like a journal: EC current = 1.8 + drift × days + salt term, pH current…
Browser-local
Launch Engine
ENG-12086
Reservoir Volume & Dosing Engine — Volume, Flow & Sterilization Blueprint
The Pro-level sizing and sanitation blueprint for a hydroponic reservoir. Enter tank dimensions, working depth and head lift and the engine returns the gross…
Browser-local
Launch Engine
ENG-12089
Water Quality Analyzer — Hardness, RO & Treatment Blueprint
The feed-water screener for a hydroponic reservoir. Pick a water source type, drop in the pH, EC and hardness in ppm CaCO3, and the…
Browser-local
Launch Engine
03
Photobiology & Energy Systems
Spectral distribution, daily light integrals, and fixture photon efficacy.
ENG-12077
Energy Load & Solar Microgrid Sizer — Load, Solar & Cost Blueprint
The Pro-level electricity and autonomy blueprint for a grow room. Enter the lighting, pump and fan wattage with run hours and the engine returns…
Browser-local
Launch Engine
ENG-12080
Light Coverage Architect — Bar vs QB, Inter-Canopy & UV Blueprint
The Pro-level coverage and spectrum blueprint for a grow area. Enter the footprint, fixture form-factor, photon count, mounting height and dim curve and the…
Browser-local
Launch Engine
ENG-10818
Light Spectrum Photomorphogenesis Designer — McCree + Phytochrome Lab
Photobiology lab that folds McCree crop weights, phytochrome Pfr and cryptochrome blue response into one weighted PPFD, a photosynthesis score, a photomorphogenesis score and…
Browser-local
Launch Engine
ENG-10803
Lighting Cost Calculator — LED vs HPS & Electricity Blueprint
Size the grow light bank off the canopy target and price the electricity it pulls. Enter the grow area and the PPFD target —…
Browser-local
Launch Engine
ENG-12084
PAR / DLI Photobiology Lab
The photobiology blueprint for the grow room. Convert PPFD and photoperiod into Daily Light Integral, back-calculate the exact PPFD a target DLI demands, and…
Browser-local
Launch Engine
04
Nutrients & Formulation Science
Elemental ion modeling, ionic antagonism, and secondary metabolic steering.
ENG-10817
Flavor Brix Terpene Optimizer — Chef-Grade Flavor Lab
Chef-grade flavor model. Crop-specific Brix and terpene baselines compound through PPFD, EC, potassium, sulfur, magnesium, controlled water stress, night temperature and harvest stage into…
Browser-local
Launch Engine
ENG-10815
Nutrient Antagonism Lockout Predictor — Mulder Matrix Solver
8x8 Mulder matrix solver. Enter feed ppm, EC, pH and temperature and the engine returns per-ion antagonism, uptake ratios, lockout risk, the limiting ion…
Browser-local
Launch Engine
ENG-12082
Nutrient Cost Optimizer
Plan the per-cycle cost of running a hydroponic reservoir: the liters of nutrient solution you actually mix, the make-up water after evaporation, a full…
Browser-local
Launch Engine
ENG-12083
Nutrient Lab Pro — Elemental PPM Formulator
The elemental PPM formulator. Feed in reservoir volume, target EC and source-water PPM and it returns the real NPK, Ca, Mg and S in…
Browser-local
Launch Engine
05
Systems Architecture & Irrigation
Hydraulic manifolds, nozzle pressure drops, and root desiccation clocks.
ENG-12087
Hydroponic System Selector Quiz — Kratky, NFT & Vertical Tower Blueprint
The systems-decision blueprint for a hydroponic grow. Enter the floor area, build budget, your experience level, the crop you want and the monthly yield…
Browser-local
Launch Engine
ENG-12079
Irrigation Timer Calculator — Drip, Schedule & Dryback Blueprint
An irrigation schedule calculator that starts from the dryback you want to steer: drip timer minutes = substrate volume × dryback ÷ (flow rate…
Browser-local
Launch Engine
ENG-10814
Root Hair Desiccation Timer — Aeroponic Misting Half-Dry Lab
Penman-Monteith root-hair desiccation model for aeroponic misting. Enter droplet size, air temperature, VPD and crop stage and the engine returns the half-dry time of…
Browser-local
Launch Engine
ENG-10808
Substrate Moisture Calculator — Dryback & Water Holding Blueprint
A substrate moisture calculator that reads your pot like a water bank: field capacity per medium (coco 75%, rockwool 80%, soil 45%, perlite 35%,…
Browser-local
Launch Engine
ENG-10812
System Matcher Quiz — Find Your Perfect System
The systems-decision quiz that scores kratky, DWC, NFT, ebb & flow, drip, vertical tower, RDWC and aeroponics against your space, budget, experience and crop…
Browser-local
Launch Engine
ENG-10813
Tower Blueprint Generator — Vertical Tower Blueprint & Cut List
The vertical tower blueprint and cut-list generator. Floor area, height, ports and crop spacing turn into the exact frame build — pipe lengths, channel…
Browser-local
Launch Engine
06
Pathology Risk & Farm Economics
Early hazard bio-indices, harvest yield forecasts, and enterprise OpEx models.
ENG-10816
Biofilm Pythium Risk Clock — Reservoir Biofilm & Root Rot Timer
Exponential biofilm growth model fused with a Pythium germination logistic. Temperature, days since change, dissolved oxygen, system and crop all feed one growth clock…
Browser-local
Launch Engine
ENG-10811
Commercial Farm Planner — ROI & Budget Blueprint
The ROI and budget blueprint for a hydroponic farm. Enter grow area, crop, yield, price and system type and the engine returns annual revenue,…
Browser-local
Launch Engine
ENG-10809
Pest & Disease Risk Calculator — IPM & Prevention Blueprint
A pest and disease risk calculator that reads your grow room through three threat lenses — temperature, humidity and leaf wetness — and prices…
Browser-local
Launch Engine
ENG-12090
Yield & Economics Calculator — Harvest, Dry Weight & ROI Blueprint
The harvest and money blueprint for a hydroponic room. Enter the floor area, planting density, per-plant grams, sale price per dry kg and cycle…
Browser-local
Launch Engine
No engine matches that query yet.
Try “VPD”, “calcium”, “DLI”, “nozzle”, or clear the filters.
MY GROW ROOM · CLIENT STORAGE PROTOCOL
Local Agronomy Vault & Telemetry State
Saved readings live in this browser only. Nothing is uploaded, and clearing the vault never touches your account because there is no account.
ACTIVE SESSION SNAPSHOT
4 ENGINES SYNCED
TARGET VPD
0.81 kPa
Current canopy solve
RESERVOIR EC
1.60 mS/cm
800 PPM (500 scale)
CANOPY DLI
17.5 mol
18 h @ 270 µmol
DISSOLVED OXYGEN
8.2 mg/L
19.5 °C chilled
All calculations are stored in your browser's localStorage. Zero tracking. Zero remote telemetry uploads.
RUNNING PROTOCOL CHECKS
This session
- Mist interval (aeroponic)5s ON / 270s OFF
- HOCl continuous dosing3.0 PPM active
- Daily dehumidification38.4 PPD sized
- Next reservoir changeout4 days remaining
CANONICAL RESEARCH INTEGRATION
Explore The 6 Knowledge Hub Pillars
Every computational model in Grow Lab is paired with empirical whitepapers, field trials, and grower protocols.
Plant Care
VPD, root oxygenation & salt locks
63 ESSAYSSystems
HPA aeroponics, DWC & deep troughs
61 BLUEPRINTSCrop Guides
Brassicas, vine crops & microgreens
61 VARIETALSResources
Atomizer nozzles & spectrum charts
60 DATA SHEETSComparisons
Aero vs Hydro, PAR vs ePAR
60 STUDIESCommercial
CapEx payback, automation & IPM
60 MODELS