The Gardeners' Knowledge Hub

A 1,600 CFM Whole House Fan Cools About 500 Square Feet
Fan airflow is the number everyone shops on. Attic vent area is the number that decides whether the fan can do anything at all.

Do Adjustable LED Grow Lights Actually Grow Plants Better?
Adjustable LED grow lights do not add photons. Here is what dimming and pivoting bars actually change, and when the IONPRIME 10 is worth it over a fixed light.

IONPRIME vs IONFRAME vs IONBOARD: Which AC Infinity Grow Light Should You Buy?
Three lines, three prices, and a lot of overlapping coverage claims. Here is what separates them on the spec sheet, and which one belongs in your tent.

AC Infinity vs Spider Farmer: Which Smart Grow System Is Better?
AC Infinity UIS and Spider Farmer GGS solve grow room automation in two different ways. We compare controllers, sensors, fan speed control, warranty and light specs, including the places where Spider Farmer is the better buy.
