System No. 01

Aquaponic Nitrogen Conversion Dynamics

How nitrifying bacteria convert ammonia to nitrate, why cycling a new system takes weeks, and how to keep it stable.

System No. 02

Water Walls and Winter Heat Storage

The physics of water as a heat store, how to size a water wall, and where passive storage stops being enough.

System No. 03

Vapour Pressure Deficit Control

Calculating VPD from temperature and humidity, choosing target ranges, and automating the climate with sensors.