Author: Eric Klamer
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- Cultivation Software (18)
- Growing Fundamentals (26)
- Market Analysis (6)
- Cost Per Pound (9)
- Yield Optimization (5)
- AI Cultivation (29)
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Athena vs Pulse vs AROYA VPD Charts: Why They Disagree
Athena, Pulse, and AROYA can show different VPD numbers without any one chart being wrong. The difference is the measurement convention: air VPD, leaf VPD, or an assumed leaf-temperature offset.
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Clone and Seedling Environment: Temperature, Humidity, and VPD From Cut to Veg
A stage-by-stage operating guide for commercial propagation rooms, from fresh cuts through rooted clones and the handoff to veg.
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VPD With CO2 and LED Lights: Why Standard Charts Miss
CO2 and LEDs can change how a crop behaves at the same air VPD. Measure leaf temperature before shifting your room targets.
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The Grow Never Leaves Your Head
It is 2am and you are awake again. Not because something went wrong. Because something could be going wrong, right now, and you would not know until morning. Is the dehumidifier in flower still keeping up, or did it fault out at midnight and the room is climbing toward the humidity range where botrytis starts…
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Proteus 420 Alternatives for Cultivators (2026)
For cultivators comparing Proteus 420 alternatives: look at Canix, GrowFlow or Distru when the missing job is inventory, costing or wholesale operations. Include Growgoyle when the immediate problem is crop planning, crew assignments, maintenance and finding the room’s history. A retail or accounting replacement needs a separate evaluation. I publish this comparison as Growgoyle’s founder…
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GrowFlow Alternatives for Cultivators (2026)
The right GrowFlow alternative depends on which GrowFlow job you need to replace. For wholesale inventory and orders, compare Canix, Distru and Proteus 420. For a retail register, evaluate the retail products separately. For crop plans, crew work, maintenance and connected room records, include Growgoyle. I’m Growgoyle’s founder and a commercial grower. GrowFlow already includes…
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Canix Alternatives for Cultivators (2026)
For commercial growers comparing Canix alternatives: GrowFlow, Distru, Proteus 420 and BioTrack belong in an inventory and business-operations evaluation. Growgoyle is worth trying when the pain is planning the work, keeping maintenance current and finding the crop record. Canix itself has cultivation tasks and costing, so test the actual gap before switching. I’m Growgoyle’s founder…
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VPD in Veg: Targets and Chart
Veg VPD targets grower-to-grower: run 0.8-1.1 kPa for fast growth, gentler for clones, and step up as you near the flip.
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VPD in Flower: Week-by-Week Targets
VPD in flower, week by week: practical leaf-VPD starting ranges for stretch, bulk, and ripening, plus the crop and humidity checks behind each target.
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How to Read a VPD Chart (and What kPa Actually Means)
A grower-to-grower walkthrough of how to read a VPD chart, what the two axes mean, and what kPa actually tells you at the canopy.