How much light is to much in a grow tent

Bcntc

Active Member
Hi I have a 5x5 grow tent and I have two 600W VIPARSPECTRA grow lights in there now. If I added two more would it be to much for that tent or would the tent get to hot in there for the plants? Because right now it seems like the temperature is running a little high in there and just wanted your opinions on this before I spend the money on two more lights.
 

Arnski5000

Well-Known Member
If temp is high now I don't see more light making it cooler. Are extracting the warm air out and sending cool air in??
 

TreeFarmerCharlie

Well-Known Member
So here is a pic of the inside of my tent and the main reason that I would like to have two more lights is to fill up the whole space of the tent with light. It just seems with the two lights that I have it doesn’t reach the edges all the way around.
You really need 5 of those lights for a 5x5 tent.
 

Bcntc

Active Member
Also another good note is that I started with just one of the 600W lights with 4 plants and I had a good yield of around 2-3 ounces per plant but needed more light in there and even two of them doesn’t seem like it reaches around the edges.
 

TreeFarmerCharlie

Well-Known Member
It depends on what you have in there now. You want good airflow through the tent but you don't want it to be like a wind tunnel in there. How hot is it getting in there now and how hot is it in the room the tent is in?
 

Bcntc

Active Member
It depends on what you have in there now. You want good airflow through the tent but you don't want it to be like a wind tunnel in there. How hot is it getting in there now and how hot is it in the room the tent is in?
We’ll I have two tents in there one is 5x5 and the other is 3x3 and the exhaust is not ran out the window or anything so I bet that is why the room is getting so hot. It’s like at 90 degrees in the tent so I leave the tent open partially while the lights are on. So I think I just need to figure out and run the exhaust out a window would you agree.
 

TreeFarmerCharlie

Well-Known Member
Yes, you should be venting it outside but you also need to make sure your fan is pushing enough air. What is the CFM rating of the fan you are using?
 

TreeFarmerCharlie

Well-Known Member
That should give you plenty of airflow as long as you have enough ports opened up as intakes. I'd exhaust it out the window and you'll probably see a big difference.
 

Dr. Who

Well-Known Member
How about we just flat out say that those "blurple" lights are NOT the best thing out there for blooming ---- period!

Wasting time on under powered and poorly color banded LED's is never worth the price..

I just got off my butt to finally try out some pretty nice, direct 1K+ replacement LED bank's..

Now then, for your 5x5 tent... I might say that a HLG Lm301B Samsung LED based set with Cree 660nm band reds (rspec - model) run by a Mean well 550 driver would be the small end of what I would get. This unit runs at 480w.

Personally, I just sprung for 3 boards with the Lm301H updated LED's. This delivers more umals of light energy per each LED.
These were built to order for me and cost me just under $500 each vs the $850 for a name brand HLG. Same brand LED's (Samsung and Cree) Plus the same driver unit.

These guys get their components at the same place as HLG too.

You can step up one more level and go to the DE HID equiv. in an 600w HLG system.
Crack yer wallet open for that by HLG or look to about $710 bucks from my custom builder....

Same warranty as the HLG pricey units too...
 

TreeFarmerCharlie

Well-Known Member
How about we just flat out say that those "blurple" lights are NOT the best thing out there for blooming ---- period!

Wasting time on under powered and poorly color banded LED's is never worth the price..

I just got off my butt to finally try out some pretty nice, direct 1K+ replacement LED bank's..

Now then, for your 5x5 tent... I might say that a HLG Lm301B Samsung LED based set with Cree 660nm band reds (rspec - model) run by a Mean well 550 driver would be the small end of what I would get. This unit runs at 480w.

Personally, I just sprung for 3 boards with the Lm301H updated LED's. This delivers more umals of light energy per each LED.
These were built to order for me and cost me just under $500 each vs the $850 for a name brand HLG. Same brand LED's (Samsung and Cree) Plus the same driver unit.

These guys get their components at the same place as HLG too.

You can step up one more level and go to the DE HID equiv. in an 600w HLG system.
Crack yer wallet open for that by HLG or look to about $710 bucks from my custom builder....

Same warranty as the HLG pricey units too...
The LM301B and LM301H are the exact same diodes. The "H" is just to market it along with their other horticultural lights.
 

Dr. Who

Well-Known Member
The LM301B and LM301H are the exact same diodes. The "H" is just to market it along with their other horticultural lights.
They are to a point but the 301B's deliver 2.6 umal's each. The 301H models - 3.03 umal's.

Both My guy and HLG state this. So does Samsung...... The H models are the newest too. Not just a designation "letter"
But! YES Samsung calls them the new Horticultural edition of the older 301B...

We each get a point...
 

ANC

Well-Known Member
I just moved my light up, plants were showing mild light stress, phone ap was reading about 70000 lux so roughly 1000 umols, if I have the conversion right... No way my small TD silent fan can keep up with supplying CO2 with that demand.
 

TreeFarmerCharlie

Well-Known Member
They are to a point but the 301B's deliver 2.6 umal's each. The 301H models - 3.03 umal's.

Both My guy and HLG state this. So does Samsung...... The H models are the newest too. Not just a designation "letter"
But! YES Samsung calls them the new Horticultural edition of the older 301B...

We each get a point...
Interesting...I was just watching a video the other day where a guy put this debate to rest by showing the specification sheets for both the LM301B and LM301H. I'm wondering where he got those spec sheets, though, if Samsung and HLG are saying something different.
 

ANC

Well-Known Member
I think blurple can be useful in light dep greenhouses, to keep light levels up as clouds move over etc...
Should be pretty cost-effective in terms of adding photons like that with most of the spectrum provided by the sun.
 
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