T5 high out put flourescent vs 250 w hps

[grow show]

I was wondering what light would be the best for my future grow box?
The dimensions are 4ft x 2.5ft x 3.5ft (H,W,L). I am deciding between a 250 w hps or a T5 high out put fluorescent with four 2ft tubes totaling 96 w. I only plan on growing 4 plants. I think that the heat would be an issue from the hps that is why I'm leaning towards the fluorescents. What are your thoughts?

 

[2muchSmoke]

i have a 8bulb 4ft t5 and it stills get hot but not as hot as my 400w hps but if you got a good fan i would go with the hps are you going to do flowering and veg in same box?

 

[past times]

going to need exhaust for either situation. that said,m hps has more and better quality yield. that space could fit a 400 watt hps also...might as well do it

i grew last grow with a 250 and ended up with just over 7 z"s total, off 6 plants. i had the tops all arranged so they were in about a 2.5x2 ft. canopy. i am switching up to a 400hps too try and expand that width to 3.5ft.

 

[mane2008]

Ok if u can cool it u can go wit a 250/400 but i think u should do a sog (sea of green).

My reflector takes up about 7in. in height so lets just say u got somewhere near 41in. of space left.
then the average pots take up bout 12in. if u doin soil bra?
So 29in about of space left after that.

So u should flower them at about 8-10in.
usually double in height so lets say 16-22in max.
never seen triple like pple say.
I advise u grow a indica dominant strain bra, so u get bushy stocky ass plants, instead of lanky tall ass sativas.
Leaves u with about a good 7in of space between ya light n ya plants.

My math might be wrong but u can figure it out better when u find out the meas of ya reflector, pots.

Hope this helps u bra.

 

[mane2008]

oh n i actually got a space kind like yours too. I got a 2*2*4 n i use a 400mh/Hps in it wit a cool tube. So if u can cool it go fo it bra.

 

[mockingbird131313]

I suggest you design your box on standard T5 dimensions. Light engineers say that T5 loose 4-6 percent of their brightness over their lifespan. HPS loose up to 20 percent. Plant research labs, at universities, are installing T5 lights frequently. HPS is an old technology. I can think of ten reasons to buy T5 and no reason to buy HPS unless it is REAL cheap.

 

[calicat]

I was wondering what light would be the best for my future grow box?
The dimensions are 4ft x 2.5ft x 3.5ft (H,W,L). I am deciding between a 250 w hps or a T5 high out put fluorescent with four 2ft tubes totaling 96 w. I only plan on growing 4 plants. I think that the heat would be an issue from the hps that is why I'm leaning towards the fluorescents. What are your thoughts?

Usually a four t-5 bulb setup will produce about the same amount of lumens as would a 400 W MH. And of course the heat of 400 W MH surpasses that of a 400 W MH. The question is would those t-5's penetrate the canopy like an HID can. But I have seen people grow all stages with cfl's and have had gr8 success. I am sure you could do the same with your t-5's. Good Luck with your construction and your future grow.

 

[blinkykush]

use the HPS, but air cool it. I have a T5 8 bulb and they are amazing lights but the HID lights are gonna get your buds to create way more resin. Any reason why you dont just use a 400 watt? but the t5 does penetrate the canopy very efficiently, see VV's T5 thread(victorvicious) And dont be fooled the T5 will put of a lot of heat too. T5=great veg light for clones and seedlings alike, but for the best results with adequate ventilation, go HPS

 

[mane2008]

Usually a four t-5 bulb setup will produce about the same amount of lumens as would a 400 W MH. And of course the heat of 400 W MH surpasses that of a 400 W MH. The question is would those t-5's penetrate the canopy like an HID can. But I have seen people grow all stages with cfl's and have had gr8 success. I am sure you could do the same with your t-5's. Good Luck with your construction and your future grow.

I have t-5 and 96w of t5's will only put of 8000lumens and a 400w Mh puts out 38000lumens actually.

 

[calicat]

I have t-5 and 96w of t5's will only put of 8000lumens and a 400w Mh puts out 38000lumens actually.

There are several retailers I have seen with the same model ( forgot the name ) but claimed that their product puts out 38,000 lumens. I guess they are inviting themselfves for a lawsuit lol.

 

[mane2008]

There are several retailers I have seen with the same model ( forgot the name ) but claimed that their product puts out 38,000 lumens. I guess they are inviting themselfves for a lawsuit lol.

Hell yea. Neway i checked n i saw one that puts out 40,000lumens but they are 8 4ft tubes.
The ones he talkin about have 8,000lumens. thats y i said go hps/MH.

He would end up spending about $270 on those. They are great tho just costly. Id love to have em on da side of my grow room. U got t5's like that?

 

[calicat]

Hell yea. Neway i checked n i saw one that puts out 40,000lumens but they are 8 4ft tubes.
The ones he talkin about have 8,000lumens. thats y i said go hps/MH.

He would end up spending about $270 on those. They are great tho just costly. Id love to have em on da side of my grow room. U got t5's like that?

Nope if you were asking me that question. I am still debating if I want to invest in that system. My fluoros do what they need to do as well as my 400 W MH.

 

[grow show]

yeah i think I'm going to veg and flower in the same box.

 

[grow show]

Is the intake fan supposed to be more powerful than the exhaust for ventilation, what would be adequate cooling for a 250 w hps?