Seeking Lighting set-up advice

bernie344

Well-Known Member
Hello, I purchased a nice grow tent that is 60x32x80. I'm trying to find a good lighting fixture for that space, but most the lights I'm finding on amazon say they only cover a 2.5x2.5 or 3x3 area. The grow light I'm looking at is this one- https://www.amazon.com/gp/product/B081CXYP44/ref=ox_sc_act_title_1?smid=A18523PHJQXHC5&th=1

My preference is LED since I wont have a lot of space for ventilation and getting rid of heat.
I'm only using the tent for veg, I have a separate environment for flower. I'm trying to replace a 600watt metal halide because I know that will keep my plants a decent height. Is one 1000watt LED growlight with the reflective material enough to cover a 5x2 foot area? Or will I need 2 1000watt fixtures for this kind of space? Thanks in advance.
Those lights are not 1000watts more like 100watts
 

bernie344

Well-Known Member
The tent I have has like 6 ventilation holes, I was told LEDs run a lot cooler compared to MH or HPS. The 2,000 watt says it replaces a 750w metal halide. So I would need an above light with added side lighting? Is there anything affordable you could recommend?
Led runs much cooler than Mh/Hps, Look for true watt output not what the name says.
I have on called QB 4000 but its true watt is 460.
Do some browsing research.
 

1212ham

Well-Known Member
Not for QB96's. Those have a seperate heatsink that's way bigger. The heatsink he posted says it's for the 288 and 304 only.
No, it says "Slate 2 series is ideal for low cost high power QB 304 and QB 288 cooling applications."



Heatsink Recommendations
Recommended Board temperature 85C max
Aluminum Plate - 50 Watts
Slate 1 or similar Extruded Aluminum - 60 Watts
Slate 2 or similar Extruded Aluminum - 75 Watts
SST120 or similar 120mm Diameter Pin heatsink - 100 Watts
SST140 or similar 140mm Diameter Pin heatsink - 150 Watts
SSTX or similar 125x125 Splayed Pin heatsink - 200 watts
 
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PadawanWarrior

Well-Known Member

Heatsink Recommendations
Recommended Board temperature 85C max
Aluminum Plate - 50 Watts
Slate 1 or similar Extruded Aluminum - 60 Watts
Slate 2 or similar Extruded Aluminum - 75 Watts
SST120 or similar 120mm Diameter Pin heatsink - 100 Watts
SST140 or similar 140mm Diameter Pin heatsink - 150 Watts
SSTX or similar 125x125 Splayed Pin heatsink - 200 watts
Nobody was talking about the QB96's. @oill linked a heatsink for the 288 or 304 boards, but was recommending the QB144's. I don't think you can mount QB144's to those heatsinks, but don't really know for sure.

The confusion was in the heatsink he linked to.

I actually just bought 6 of the QB96's on Black Friday for the hell of it.
 

GreenForMiles

Active Member

@oill Would something like this be enough to cover 5x2.5 growing space? It's more within my budget. I don't see where it says those heatsinks were compatible with the rest. I watched a youtube video on the wiring and I feel pretty confident I wont blow anything up. I'm really just looking for quality lighting for 5 plants in veg, maximum 3 feet tall, each pot 1x1 foot. I have a tent that is enclosed in a 60x32x80 space, so the fixture can't exceed those dimensions. I may have to go with a cheaper alternative like HID until I can invest more into an LED or a different dimension grow space.
 

PadawanWarrior

Well-Known Member

@oill Would something like this be enough to cover 5x2.5 growing space? It's more within my budget. I don't see where it says those heatsinks were compatible with the rest. I watched a youtube video on the wiring and I feel pretty confident I wont blow anything up. I'm really just looking for quality lighting for 5 plants in veg, maximum 3 feet tall, each pot 1x1 foot. I have a tent that is enclosed in a 60x32x80 space, so the fixture can't exceed those dimensions. I may have to go with a cheaper alternative like HID until I can invest more into an LED or a different dimension grow space.
Those are awesome lights. I have 3 of the 135's. 1 really isn't enough, but you could get 1 for now and get another 1 or 2 later when you have extra money.

I would get the Rspec though if you want to flower with it too. Bspec is the veg spec.
 

GreenForMiles

Active Member
Those are awesome lights. I have 3 of the 135's. 1 really isn't enough, but you could get 1 for now and get another 1 or 2 later when you have extra money.

I would get the Rspec though if you want to flower with it too. Bspec is the veg spec.
My closet is about 5x3 and I was able to grow a decent lot of 4 plants with this as lighting https://www.amazon.com/gp/product/B005DOS0R8/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

It was my first buy and LED's look cooler. Honestly, I thought they ran a lot colder which was the big appeal for me personally. The Metal Halide is half the price but gets the job done. I'm thinking of doing what you recommended about buying over time. I'll start out with a lame MH light then add more led's over time. I wanted the blue spec because I'm using this tent specifically for seedling and veg. I'm using my closet armed with an 600w HPS and reflective tape for when they're ready for flower, it worked well before.

I already did one grow with the 600w HID, some nugs could've been denser, but it wasn't bad bud. The plants ended up being the perfect size for the grow space with the 600w too.
 

PadawanWarrior

Well-Known Member
My closet is about 5x3 and I was able to grow a decent lot of 4 plants with this as lighting https://www.amazon.com/gp/product/B005DOS0R8/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

It was my first buy and LED's look cooler. Honestly, I thought they ran a lot colder which was the big appeal for me personally. The Metal Halide is half the price but gets the job done. I'm thinking of doing what you recommended about buying over time. I'll start out with a lame MH light then add more led's over time. I wanted the blue spec because I'm using this tent specifically for seedling and veg. I'm using my closet armed with an 600w HPS and reflective tape for when they're ready for flower, it worked well before.

I already did one grow with the 600w HID, some nugs could've been denser, but it wasn't bad bud. The plants ended up being the perfect size for the grow space with the 600w too.
Ya, I'd keep using the HID, and slowly buy quality LED then if it was me. If it's 3 ft wide you could even do 3 260's in there. But those are $315 a piece after the "RIU10" discount code. Make sure to use that if you order HLG lights.

 

eekje

Well-Known Member
Decent LED's do work, but they are expensive. And as said in this thread, they produce quite an amount of heat as they need cooling in order to work not melt the diodes and the control plate. I have 2 of THOSE and they perform outstanding sofar. For me, the results are the same as a 600w hps. And I have about 5-6 years of HPS experience.

some cons to take into consideration:
- they are heavy
- they make noise
- they produce heat

Don't trust any aliexpress/amazon sh#t tier LED's, that would be just throwing money away.
 

Bosgrower

Well-Known Member
You haven’t told us what your budget is so suggestions are difficult. I will preface this suggestion with an acknowledgement that suggesting anything Mars-Hydro usually evokes screams of rage from HLG fans. That said, you should look at the SP150. Ideally, 3 of them would give you 450 true watts, but you could get by with 2 initially and add a third when the budget allows.
They have a blue heavy spectrum that will be good for veg and they’re only $140 each ... plug and play.
If you go this route with 2 of them, hang them parallel to the 32” sides between 1 and 1 1/2 feet from the ends of the tent.
 

GreenForMiles

Active Member
You haven’t told us what your budget is so suggestions are difficult. I will preface this suggestion with an acknowledgement that suggesting anything Mars-Hydro usually evokes screams of rage from HLG fans. That said, you should look at the SP150. Ideally, 3 of them would give you 450 true watts, but you could get by with 2 initially and add a third when the budget allows.
They have a blue heavy spectrum that will be good for veg and they’re only $140 each ... plug and play.
If you go this route with 2 of them, hang them parallel to the 32” sides between 1 and 1 1/2 feet from the ends of the tent.
I mentioned on an early reply that I didn't really want to exceed 200/250$ for the light/driver/heatsink. Already spending a lot on soil and environment control things.

Is this the light you're referring to - https://www.amazon.com/MARS-HYDRO-Coverage-Hydroponic-Spectrum/dp/B0855QW8FK
Its slightly above my current budget but I would be able to get 2 for a bit. I'm thinking i may go metal halide one more month, then pickup the LED's 1 by 1 adding them in until I no longer need the metal halide.

Also did you mean to set them up parallel with lights aiming downward, or aiming inward? Do you think this could replace the 2 as a 1 https://www.amazon.com/MARS-HYDRO-Spectrum-Hydroponic-Fixtures/dp/B07PLZLKVM/ref=sr_1_11?dchild=1&keywords=sp150&qid=1609349821&sr=8-11

You have all been a great help so far.
 

jimihendrix1

Well-Known Member
Those only draw 99w.

Remember one needs 40.3w Sq/ft.

Sq/Ft x 40.3w Sq/Ft is the formula.

Also manufacturers grossly over rate the products.

You have 5 x 2.5???

5 x 2.5 = 12.5

12.5 x 40.3=503.75w

You need 503.75w/ of the Samsung diodes.
 

Bosgrower

Well-Known Member
I mentioned on an early reply that I didn't really want to exceed 200/250$ for the light/driver/heatsink. Already spending a lot on soil and environment control things.
Sorry ... I missed that

Is this the light you're referring to - https://www.amazon.com/MARS-HYDRO-Coverage-Hydroponic-Spectrum/dp/B0855QW8FK
Its slightly above my current budget but I would be able to get 2 for a bit. I'm thinking i may go metal halide one more month, then pickup the LED's 1 by 1 adding them in until I no longer need the metal halide.
Also did you mean to set them up parallel with lights aiming downward, or aiming inward?
Yes, that's the one ... although you'll save sales tax if you buy it on the mars-hydro site.
The reality is that you can veg under a wide variety of lighting options. Ideally you want to have a blue leaning spectrum and enough micro moles of photons so that you maintain a good plant structure and don't end up with leggy plants that will create wildly uneven canopies in flower. As for placement,
As for placement in your tent ... this would be the placement for 3 of them
_______________________________________________
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| . . . . || . . . . . . . . . . . .. || . . . . . . . . . . . . .|| . . . . . |
|_____||________________||_______________||_______|

_And this would be the placement for 2
_______________________________________________
| . . . . . . . || . . . . . . . . . . . . . . . . . . . . .|| . . . . . . . .|
| . . . . . . . || . . . . . . . . . . . . . . . . . . . . .|| . . . . . . . .|
|_________||_________________________||__________|


It's an option for you, but while this or 2 of the 150s would give you 300w, this one would install on the long axis and would not really lend itself to additional lights.
 

GreenForMiles

Active Member
Those only draw 99w.

Remember one needs 40.3w Sq/ft.

Sq/Ft x 40.3w Sq/Ft is the formula.

Also manufacturers grossly over rate the products.

You have 5 x 2.5???

5 x 2.5 = 12.5

12.5 x 40.3=503.75w

You need 503.75w/ of the Samsung diodes.
So ideally if I went for LED, I'd need two of these guys, since it's labeled at only 300 watts?

The 145 mars light is only 135watt. so I'd need 4? Perhaps I could get away with one of the 300 watt and one of the 135?'s There's a lot to choose from and its hard to tell what's actually legitimate
 

GreenForMiles

Active Member
Sorry ... I missed that


Yes, that's the one ... although you'll save sales tax if you buy it on the mars-hydro site.
The reality is that you can veg under a wide variety of lighting options. Ideally you want to have a blue leaning spectrum and enough micro moles of photons so that you maintain a good plant structure and don't end up with leggy plants that will create wildly uneven canopies in flower. As for placement,
As for placement in your tent ... this would be the placement for 3 of them
_______________________________________________
| . . . . || . . . . . . . . . . . .. || . . . . . . . . . . . . .|| . . . . . |
| . . . . || . . . . . . . . . . . .. || . . . . . . . . . . . . .|| . . . . . |
|_____||________________||_______________||_______|

_And this would be the placement for 2
_______________________________________________
| . . . . . . . || . . . . . . . . . . . . . . . . . . . . .|| . . . . . . . .|
| . . . . . . . || . . . . . . . . . . . . . . . . . . . . .|| . . . . . . . .|
|_________||_________________________||__________|


It's an option for you, but while this or 2 of the 150s would give you 300w, this one would install on the long axis and would not really lend itself to additional lights.
Awesome, you've been very helpful. I'm going to get 2 for now, then a 3rd next opportunity. Mars site has none in stock for america right now. Overall this is 280$ for 2 good lights that should work for a bit, kind of the same as @oills recommendation, just slightly more intact and roughly the same price. I appreciate all the help!
 

Bosgrower

Well-Known Member
Awesome, you've been very helpful. I'm going to get 2 for now, then a 3rd next opportunity. Mars site has none in stock for america right now. Overall this is 280$ for 2 good lights that should work for a bit, kind of the same as @oills recommendation, just slightly more intact and roughly the same price. I appreciate all the help!
If you email Mary at [email protected] she can probably get you a better price and let you know when the US store will be back in stock. I've used her for tents recently and she was quite helpful.
 

bernie344

Well-Known Member
Decent LED's do work, but they are expensive. And as said in this thread, they produce quite an amount of heat as they need cooling in order to work not melt the diodes and the control plate. I have 2 of THOSE and they perform outstanding sofar. For me, the results are the same as a 600w hps. And I have about 5-6 years of HPS experience.

some cons to take into consideration:
- they are heavy
- they make noise
- they produce heat

Don't trust any aliexpress/amazon sh#t tier LED's, that would be just throwing money away.
You mean LEDs make noise and run hot?
Please explain.
 
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