how close should 2ft 4 bulb t5

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #1

How close should I have this fixture on my seedlings I’m reading inches away then 2 ft away anybody with solid experience know ideal?

Advance Spectrum 400W Sun Series 4-Bar Full Spectrum LED Grow Light

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Gorillaglue4u

Well-Known Member

• Jun 7, 2020

• #2

I keep my t5 right on top of the plants

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #3

Right on top is what couple inches doesn’t that make temperature to high ideal is 73-75 right if I go closer be to hot

 

PadawanWarrior

Well-Known Member

• Jun 7, 2020

• #4

2" the whole time.

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #5

@PadawanWarrior what about room temp then light that close bring me to hot right

 

PadawanWarrior

Well-Known Member

• Jun 7, 2020

• #6

Kindbuds303 said:

@PadawanWarrior what about room temp then light that close bring me to hot right

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They don't put off much heat. If your room temp is 73-75 you're golden. If you're worried about them putting off too much heat, just make sure plenty of air is flowing around them. Here's a pic when I had the T5's going. I have QB's in there now though.

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #7

Just worried they looked faded it’s day8 ppm going in 640 run off 380 ph 6.0

 

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Kindbuds303

Well-Known Member

• Jun 7, 2020

• #8

Don’t know how accurate this thermostats are

 

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PadawanWarrior

Well-Known Member

• Jun 7, 2020

• #9

Kindbuds303 said:

Just worried they looked faded it’s day8 ppm going in 640 run off 380 ph 6.0

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That doesn't look like the t5 from your first post. Is it just a weird angle?

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #10

Advance Spectrum 400W Sun Series 4-Bar Full Spectrum LED Grow Light

Increase the growth and performance of indoor plants from the veg to bloom stage with the Advance Spectrum 400W Sun Series 4-Bar Full Spectrum LED Grow Light

growace.com

 

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PadawanWarrior

Well-Known Member

• Jun 7, 2020

• #11

Kindbuds303 said:

Advance Spectrum 400W Sun Series 4-Bar Full Spectrum LED Grow Light

Increase the growth and performance of indoor plants from the veg to bloom stage with the Advance Spectrum 400W Sun Series 4-Bar Full Spectrum LED Grow Light

growace.com

Click to expand...

I though it might just be the pic. The plants look pretty good. If they start stretching than definitely lower the light. I would anyways slowly if it was me to prevent that from happening.

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #12

So they don’t look faded? I was going to hit them with a lil cal mag foliar ?

 

PadawanWarrior

Well-Known Member

• Jun 7, 2020

• #13

Kindbuds303 said:

So they don’t look faded? I was going to hit them with a lil cal mag foliar ?

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They might want more nutes. I don't know what soil or nutrients you're using. But if they are fed enough you can have that light basically on top of them.

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #14

600 ppm I did half strength

 

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Kindbuds303

Well-Known Member

• Jun 7, 2020

• #15

Plagron 70/30 coco is the medium I’m using

 

PadawanWarrior

Well-Known Member

• Jun 7, 2020

• #16

Kindbuds303 said:

Plagron 70/30 coco is the medium I’m using

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Can't really help then. I'm a soil guy.

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #17

no worries first time coco just gonna ride it out @PadawanWarrior

 

PadawanWarrior

Well-Known Member

• Jun 7, 2020

• #18

Kindbuds303 said:

no worries first time coco just gonna ride it out @PadawanWarrior

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@Renfro is the guy you wanna talk to.

 

Renfro

Well-Known Member

• Jun 7, 2020

• #19

Kindbuds303 said:

high ideal is 73-75 right

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Without CO2 enrichment we generally wanna see a canopy temperature about 79F.

T5 and T8 is good at about 6 inches. T12 more like 1 - 2 inches. Some strains like more light than others.

Please know that I have never used any fluorescent lights in my entire growing career (30+ years) so I am not the guy to talk to really but I have consulted for commercial grows and a few used T5 for veg. They worked best at 6 inches.

 

Kindbuds303

Well-Known Member

• Jun 7, 2020

• #20

Thanks man me either bro literally second grow and these are seedlings 8 days old didn’t wanna push them to hard my chilled x6 be here Tuesday I was told only use co2 in flower? @Renfro i currently moved it back up to 18 inches because the leafs looked a little lighter and also wasn’t pointing up like before when I lowered them