If you do not have a green house

set up is very simple and I found it working better in several years in a row compared to 200$+ grow lights
shop light (full spectrum), have full spectrum led -even better.
cinder block (2-6) to vary height
pvc pipe and angle joins, plastic, packing tape

the construction looks like so:
light goes on timer on cinder blocks, as the plants grow raise the light. this prevents leggy seedlings.

 

tarp for mess prevention. the seedlings are on rubber mud shes trays. no mess, wood floors are just fine