Here's some really cool stuff I found:
Hydroponics Calculators
Calculate light requirement, CO2 requirements, air exchange requirements, ppm, and others, and learn what's wrong with your plants. Shows different hydro systems too.
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Here's some really cool stuff I found:
Hydroponics Calculators
Calculate light requirement, CO2 requirements, air exchange requirements, ppm, and others, and learn what's wrong with your plants. Shows different hydro systems too.