Can I grow in a dark basement with lights? I have sodium light and would like to set up a hrdro in the basement. How many hours of light do I need to supply?

Can I grow in a dark basement with lights? I have sodium light and would like to set up a hrdro in the basement. How many hours of light do I need to supply?

Uprooted Clone & Seedling (1” – 6”) = 20 hrs. on; 4 hrs. off
Vegetated Small Rooted Clone & Seedling (6” – 12”) = 18 hrs. on; 6 hrs. off
Flower (13” – 48”) = 12 hrs. on; 12 hrs. off
Final, Flush & Water (24” – 48”) = 11 hrs. on; 13 hrs. off