Grow Calculators

Quick tools to calculate airflow, nutrients, and more

Room Length (ft)

Room Width (ft)

Room Height (ft)

Exchange Interval (minutes)

Room Type

Closed Loop (no exhaust to outside)

Carbon Filter Scrubbing

Carbon filters and ducting reduce airflow — adds 25% CFM for scrubbing setups.

Add extra 25% boost for high-heat setups (HPS or high-power LED + filter)