The fan is for simulated wind, the rigth most plants are cannabis, they need a breeze. Wind is the reason plants grow stronger branches, so anything thats getting heavy at the branches/outside is helped with a bit of breeze.

At the top is a cheap 100w growligth, started as sun support (dimmed to 15w) and dayligth extension. I had the windowsill full of seedlings at the beginning of the year. Now its on full blast until the cannabis moves into my growtent.

Leftmost in Glasses and in the midlle with a bit of algae are cuttings.

The Basil is standing in a 20lPot in dire need to be cut, as its starting to flower. It was a single cutting from a storebougth pot of basil. Pic of Roots:

The Cannabis is standing in leftover plastic container from supplements. Both will move into the same 20LPots as the Basil, when they have a respectable size and fluid ussage.

All 3 have air bubblers in them, would recommend as it speeds up grow and helps against root rot.