2×4 Setup Is Live… Controller Test + EarthBox Ready
March 19, 2026
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Description
Light went up. Looks clean.
The humidifier was running with auto top-off. The reservoir fed it, and the solenoid kicked on and off using the internal laser sensor. It stayed filled with no tinkering.
The high CFM kit was installed, so the tent was breathing properly.
I tested the Grandmaster 320 with the ACI controller:
Adjusted output from 7 → 10 → back down to 5.
Dimming worked perfectly. Fully responsive.
That’s all I wanted to confirm before moving forward.
Next step was:
Fill the EarthBox (10 gallons of soil).
Pop the seeds.
Dial PPFD in the next episode.
For a small 2×4 and limited soil volume…
I thought this setup was going to crush on yield.
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