I grew some killer weed with 400 watt, its really important to keep the light close to the bud and use a full spectrum bulb. That will get the trichomes nice and filled in/milky white.

If the light is too far away from the bud or shaded a lot, you will end up with a lot of clear head trichomes that don't get filled in.

My understanding is that the trichome structures form at dark, then when the light hits them they fill in.

A good ppm/ph pen helped me dial in my conditions a lot, plus a pocket microscope. I grow in soil.

Try a good hybrid, maybe JACK HERER.