I am looking at replacing an LED COB for the purpose of Vegging.
I'm new to gardening and the likes and though the light is nice it doesn't seem to be dimmable.
It also concentrates all of its light in the middle its not even lighting on a 4x4 and it I have to keep it 24 inches away from canopy.
Most bulbs sold for growing will have a spectrum available — some a lot more detailed and some a lot more smoothed. So when you say a broad spectrum like T-5s, you are talking about a particular T-5 tube with a particular spectrum, not all T-5s.
Typically, flower spectrums are 3000K - 3500K, veg spectrums are generally 4000K - 6500K. You can get T-5s for either, or mix them in a fixture for a broader spectrum.
You can also use MH or LED. These will also produce good results, but may have drawbacks for your particular situation.
Most bulbs sold for growing will have a spectrum available — some a lot more detailed and some a lot more smoothed. So when you say a broad spectrum like T-5s, you are talking about a particular T-5 tube with a particular spectrum, not all T-5s.
Typically, flower spectrums are 3000K - 3500K, veg spectrums are generally 4000K - 6500K. You can get T-5s for either, or mix them in a fixture for a broader spectrum.
You can also use MH or LED. These will also produce good results, but may have drawbacks for your particular situation.
Also if the t5 is 6 to 8 inches away it will be delivering roughly 400 micro moles per second. Which is fine if it didn't block the other light source and I can ensure the other light source isn't emitting a intensity that will put me over my Daily Light Integral. ⁷
I think it must be placed above MH.
But still ensure that the light is reaching the plants canopy at a specific intensity.
I guess I will have to look at the make and models specs.
But this has been super informative
Now I can make a decision without compromising the things I THINK I want.