Need help with choosing t5 light

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sourdieselyumyum

Well-Known Member

• May 19, 2013

• #1

wondering what size I would need to veg 4 plants for around a 1 or 2 months looking at 4 foot t5 fixtures would a 4 bulb work or would I need a 6 bulb

 

Turm

Active Member

• May 20, 2013

• #2

I'd get an 8 bulb if you can afford it. But six would be fine, would get crowded at end of veg.

 

mrwood

Well-Known Member

• May 20, 2013

• #3

What size pots?
There is a big differences in plant size at 1 month vs 2 months...

4 bulb would work. You might have some shoots that get beyond your reflector, but no big deal.
I got 3 plants (2-gal pots) under my 2' 4-bulb T5 HO, with a couple other small plants. Plants are trained during veg (e.g., topped, LST, supercrop). Light works fine.

 

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215roller

Well-Known Member

• May 20, 2013

• #4

I don't do anymore than 3 plants under my 4 foot 4 bulb fixture. I would say if you're growing more than 3 plants to definitely get 6-8 bulbs.

 

potpimp

Sector 5 Moderator

• May 20, 2013

• #5

Get the 6 bulb; more light is always better. I have a 6 light T'5 4' fixture.

 

PetFlora

Well-Known Member

• May 20, 2013

• #6

I have an 8 bulb Bad Boy. I would gt 2 @ 4 bulb- easier to change bulbs, adjust positions...

The BB allows me to use 2 side-by-side bulbs at a time. I use 2 for seedlings/clones, then 4, then 6, then 8 as they grow. 3rd pic is of my new hydro halo drip system (see my thread to follow along)

Pics under 4 bulbs

 

Jimdamick

Well-Known Member

• May 20, 2013

• #7

View attachment 2664356View attachment 2664357View attachment 2664358I just finished 8 plants from start to finish with a 8 light VHO. I would go with that, as I am a true believer in the more the better.

 

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sourdieselyumyum

Well-Known Member

• May 20, 2013

• #8

I purchased a 4ft 4 bulb I also have a 2ft 4 bulb so ill probably put one under that and the other under the 4ft just using these to get decent sized and the possibly move outside if I can find a safe enough place I purchase a 8 bulb and sent it back that thing got temps really high but it was in a small tent to tho

 

Turm

Active Member

• May 20, 2013

• #9

sourdieselyumyum said:

I purchased a 4ft 4 bulb I also have a 2ft 4 bulb so ill probably put one under that and the other under the 4ft just using these to get decent sized and the possibly move outside if I can find a safe enough place I purchase a 8 bulb and sent it back that thing got temps really high but it was in a small tent to tho

Click to expand...

If you can get proper ventilation/air flow you wont have to worry about heat, T5s really don't throw off much heat at all, even ran 24/0.

 

BluntM8

Active Member

• May 20, 2013

• #10

I agree with flora, when the plants are really young/small you can use only the one light, also, 2 4bulbers would allow you to create a tipi effect allowing the t5s to better penetrate below the canopy.