nomofatum
Well-Known Member
T5 is fine for both veg and flower, but you need a lot of them. Regardless of lighting option you want 5000-7500 lumens per square foot. It's just harder to get there with T5, you need a bunch. Giving less light in veg means getting a lankier plant with more distance between bud nodes. Early veg before roots are ready is the only point where less light than 5000-7500lm/sqft can be better.
Also note blue light is very helpful in veg, but red light is most important in flower. Note I said most important, not only important. Blues and UVB are also very important and often go missing.
Veg:
66% Blue 6500k or MH
33% Red 2700-3500k or HPS
Flower:
60% Red 2700-3500k or HPS
30% Blue 6500k or MH
10%* UVB/UVA/Deep blues (get this from a 10% uvb bulb [reptile or tanning], 3w-5w per sqft
Also note blue light is very helpful in veg, but red light is most important in flower. Note I said most important, not only important. Blues and UVB are also very important and often go missing.
Veg:
66% Blue 6500k or MH
33% Red 2700-3500k or HPS
Flower:
60% Red 2700-3500k or HPS
30% Blue 6500k or MH
10%* UVB/UVA/Deep blues (get this from a 10% uvb bulb [reptile or tanning], 3w-5w per sqft
Last edited: