I am a little iffy on the demand on the plant still. I notice the plant grew pale green and doesn't undulate even sitting directly under the light.
220 watt PC
I increased the dose of micro nutrient recently. Hopefully, that will have help it grow a bit better. The new growth is dark brown, produce undulating leaves, and much closer internod, but the leaves are smaller in size.
I am dosing 5 ml of flourish/plantex every day with addition of 5 ml of Fe every couple days.