MichiganMedGrower
Well-Known Member
Nutrients and lights are the two biggest factors when determining phenotype expression, grow the same cut under a hps vs cmh vs led you will get drastically different end results.
The only difference is how the light spectrum affects growth. The rest of the environment has as much or more to do with the results.
And I am testing the difference. It's very minor. Seemed major until I learned how to fertilize correctly for the differences.
And how the light spectrum affects growth is fully tested at university of Michigan.
None of these side by sides offer anything but opinion. Too many variables.