Current 4x4 arrangement at 2'x2' space is not going to work by the end of summer. Looking at the pictures of a year old GS it appears I need at least 8 inches of space between plants. Since my target is two rows of ten sequoias (while planted outside, ofc), I need to start modifying the holding grid. Given the fluorescent lights I currently have (18"x24"), it makes sense to arrange them in 2x3 cells so that the light would be evenly distributed and there would be enough space between plants:
I will start making new grids and then re-planting biggest plants into 6" PVC tubes starting this spring (now!) The idea is to have 4 or 5 six-plant cells by end of summer.
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