Lights getting hot

[Medkit1620]

Thanks for the reply.
Thing is I'm thinking of flipping it to flower this week, so do you think that it will be ok until harvest?
ATM it's running 24/7.

In my experience when your temps are to high during flowering you end up with very fluffy buds. I like to fix problems during veg before going into flowering. If your worried about the size getting out of hand you can always chop some of the top. Heat stress can be a problem but its very strain specific to what degree. So my advice way your pros and cons.

 

[Jacare]

I'll try to fix it asap.
Until then I'm going to have to make do!

 

[Stunned]

what intensity do you have the driver set at?
If the potentiometer is set to 100% that's going to make it hot
It doesn't need to be set all the way

 

[Jacare]

You know I had it preassembled so I never checked!
This is my first experience with qb's so could you explain what I've got to do please?

 

[Piña Delores]

If it's a Meanwell driver, it'll have a hole on the top right (as your reading it) with output written under it.

You can use a Philips screwdriver to adjust. Anti clockwise to turn down.

Hope this helps

 

[Jacare]

If it's a Meanwell driver, it'll have a hole on the top right (as your reading it) with output written under it.

You can use a Philips screwdriver to adjust. Anti clockwise to turn down.

Hope this helps

Thanks! But how much do I turn it down? What do I have to guage it

 

[Piña Delores]

As much as needed I guess, not sure what you want to gauge it in?

As a test, temperature in the tent, and Mk 1 eyeball.

 

[Jacare]

As much as needed I guess, not sure what you want to gauge it in?

As a test, temperature in the tent, and Mk 1 eyeball.

Ok.
I have adjusted it slightly so let's see how that affects the temps

 

[StoneOtter]

Ok.
I have adjusted it slightly so let's see how that affects the temps

Sweet! Bet that does it. You didn't need much. I have the same driver and didn't think to do that. Lesson learned x2. Thanks @Piña Delores

 

[Jacare]

Sweet! Bet that does it. You didn't need much. I have the same driver and didn't think to do that. Lesson learned x2. Thanks @Piña Delores

Well after the last check it had gone down to 30 degrees Celsius. If it's still around that tomorrow I'll try to adjust it a little more

 

[Purpsmagurps]

your air must be pretty stagnant or your box must be super small to be hitting those temps with a qb....
I use 800w of qb pucks and 350 of blurple and sit at ambient in my box with no ac...

 

[Purpsmagurps]

make your intake come from outside and pull it through your grow box would help, or making sure the exhaust is actually leaving the room and out of the house.

 

[Piña Delores]

Cool I'm glad I could help, from my own experience I slight turn goes a long way.

If you want a better way to measure whats going on, invest in a kill-o-watt type device. It'll measure what you lights drawing from the wall.

 

[EhCndGrower]

Mine has been reaching about 28-29C (83-85F) in my tent setup. Also found out this morning that I had only been running it at half the power. Went full power today, opened up a window and let the tent fan suck in the outside cool air. At least my humidity is down to an awesome 31%

 

[Mars Hydro]

Is the temperature on the whole area or just the panel? If it is the panel temperature, then might be normal, because light need heat release and since the HLG light is aluminum body, the body will be hotter than the traditional lights with light case and fans inside;
If the whole are is hot, then, try to get bigger air flow, make the temperature down. All other suggestions from other growers might also help, since I don't use this light, so their suggestion might be more helpful.

 

[natureman]

I have a 4 inch extractor fan and carbon filter setup. I've been advised that due to the small size of the grow that I don't need an intake

You need to get a bigger exhaust fan.
A two inch fan with a air filter is not moving a lot of air.
You need a three inch fan and filter to move more air.
The cfm's on the two inch fan won't move enough air.

 

[Jacare]

You need to get a bigger exhaust fan.
A two inch fan with a air filter is not moving a lot of air.
You need a three inch fan and filter to move more air.
The cfm's on the two inch fan won't move enough air.

I have a 4 inch fan

 

[Jacare]

Got it down to 27!

 

[Alienpus]

As a rule of thumb with passive intake, if you have a 4" exhaust fan you need two 4" holes for intake for your fan to be somewhat efficient. If you are not letting enough air in even a 6" fan may not suffice. By turning down your drivers are you not reducing light output?

 

[Piña Delores]

Got it down to 27!

pleased for you, that's a far more manageable temp.

Alienpus has a valid point about passive intakes, they need to be double the outtake size. Look at that and maybe you can turn your lights back up a bit.

I remembered today that the Meanwell "A" type drivers (the ones with built in dimming), run above their rated output when the built in potentiometer is turned to max. I know this is true of mine, I just checked .

200w driver turned all the way up draws just shy of 230 from the wall. The upshot of this is by turning it down slightly your not really losing any light output. Unless you knew about this weirdness in the first place . Turn it down slightly and you'll be getting the power your unit is rated at, and lower temps. Win win.