theres a material they use similar to aluminum foil, i cant recall it's name but im sure someone on here knows it.
regardless, white paint works best next to that material.
you wont need to feed nutrients for first 2-3 weeks,
but once your plant is in vegetation you want to supply high nitrogen ([N]PK) and low PK. something like 10-5-5 has ratio 2-1-1, which is good.
introducing small doses ( i started at 1/4 ) then increasing every other watering.
once its flowering time, supposed to supply high Potassium (NP[K]) and low nitrogen. something like 5-5-10 has ratio 1-1-2, which is good.
again, slowly introducing small doses.
Tbh, i went to Walmart and picked up Miracle Gro. they got every kind u need. cheap af too