LST

Looks great. Anchoring base of trunk in opposite direction helps reduce stress on roots and will keep it from bending/leaning in substrate over time (likely ripping roots alongn way). Keep them close to horizontal as you can as they grow out for as large as you want it to be. (well, much smaller at that point than at end, of course) don't be afraid to work the initial bend a bit - gently. Doesn't have to be "1" bend at bottom.. could be 2-3 in short span of stem. If elongated, a tie-down in middle helps avoid an arch. an arch will cause the highest shoots to steal more resources than others. if your light covers the area with 1 switch on, save the electricity at this point. If footprint / coverage of light is sufficient and intense enough in that area, that's all you need right now. Basically, avoiding stretch and vigorous growth is inidcator it has enough. When you drop to 12hours, you need 50% more intense light to give the same amount of energy you once did at 18 hours per day. That 2nd switch will be very useful plus it likely provides some red wavelengths i bet?