How close can a t5 be to canopy??

What the distance for it in flower??

So your getting the t5 up and running?
I keep mine about 6" from top of plants. Check the heat coming off of them.

As long as it doesn't touch the bulbs I'm good. I also keep a fan moving the plants.

Depends.

2 or 4 ft and how many bulbs?

I run a 4ft 8 bulb fixture. The bulbs are double stacked. Its like 15 inches wide. I'm running 8 bulbs in the same size most run four.

About ten inches is it for me. Any closer and it fries them. I'm also running UV though.

6" is a good distance for T5 lighting. Veg or Flower either one. BUT....you should always double your light in flower. Example: you have a 48--4' 8 bulb assembly. You veg using 4 center bulbs . Use all 8 bulbs for flower. Alternate spectrums---full spectrum. Gives more influence to those certain characteristics you are looking for. Tighter. Frostier. Oilier. Gardener talent prevails here. Blue-red-blue-red-etc......

whitebb2727 said:

Depends.

2 or 4 ft and how many bulbs?

I run a 4ft 8 bulb fixture. The bulbs are double stacked. Its like 15 inches wide. I'm running 8 bulbs in the same size most run four.

About ten inches is it for me. Any closer and it fries them. I'm also running UV though.

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UV requires more distance for sure...

Organic_CropKing_ :) said:

UV requires more distance for sure...

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It can burn and bleach.

But with a little practice it grows good bud.

whitebb2727 said:

It can burn and bleach.
View attachment 3703205
But with a little practice it grows

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Is that under t5 ?

RolllingStone said:

Is that under t5 ?

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Yes. They are in 15 inch wide pots for size reference.

This was a two plant scrog. That was a 15 gallon barrel cut in half so 7.5 gallon pots.

They were autos to.