Driver near top of tent?

[GinFizzLuv]

Hi everyone

I have a 2x2x3’ mini tent and am trying to maximize available height. I was able to hang my HLG 100 pretty close to the top poles.The driver has an inch or slightly less of clearance from the top of the tent. Is this acceptable/safe? If not, what is the minimum recommended amount of clearance between the driver and the top of the tent? Here is a photo for reference. Thanks!

[Jordann]

As long as there's good air circulation I wouldn't be worried.

[smoorman]

Temperature is the main concern. They have an operating temp range of 50-90C. That seems high but that is what is on the label. I'm assuming yours is the same as my HLG240. I have mine mounted outside of the tent and it's running about 63C. Are you able to put your hand on it and leave it there or do you have a means of measuring the temp?

[GinFizzLuv]

Thanks! I am just setting it up, so I have not had a chance to leave it on for a long period of time. Once I get the filter and exhaust fan setup, I will do a practice run to see how hot it gets. I looked up the specs on the data sheet and it say -40 - +70C. https://www.meanwell.com/Upload/PDF/...A-90U-SPEC.PDF

I do have a temp probe on my fan and also a digital temp gun. I will do some tests and report back.

[D.A.A.S.69]

That should be fine, but you need to get ,I can't remember what you call them, but you pull a string to adjust the height of your light, you can then let it up or down, you can get them on Amazon for bout 6-8bucks.
That HLG, Should do great in your tent.
I got one just like yours, but my small tent is a 2x2x4, I think yours is 3feet tall, so your gonna have to train your plants real short, real easy with autos.
GoodLuck. GinFizzLuv

[GinFizzLuv]

Thansk D.A.A.S.69. I do have a bag of those ratchet carabiner things. I didn’t use them as it looked like I would lose a couple inches of height?

Do you think I will have a need to go lower with the lights? I’ve read a bit about recommended distance from the light to the plant, but honestly have read conflicting information, especially with seedlings.

[GinFizzLuv]

Also, 10-4 on the training. I bought the shortest strains Mephisto had in stock, Sour Stomper, 4 assed monkey, and 3 Bears OG. Unfortunately the super short strains like Sour Crack, Strawberry Nuggets and 24 carat are all out of stock.

[D.A.A.S.69]

I've never used mine for seedlings, I just use 65k, cfls, for couple of weeks.
Yeah I like being able to move my lights, up an down, yeah that's the name, carabiners, I ain't to good at remembering.
But if they start stretching you want to be able to move your light closer.
I can tell you been doing your homework, so I know you'll do just fine.
You can't go wrong doing what Nebula says.
Have Fun.

[SoOrbudgal]

GinFizzLuv ractchet yo yo's I think is what there called. Another way is to raise the pots or lower them with risers/blocks of wood. Those plastic risers with feet and holes in them for the fabric grow bags to breath. Good Luck

[duckman]

for future reference, SoOrbudgal, I believe those plastic riser thingies you mention are called plant elevators

[Rwise]

Thay call them risers here.

[SoOrbudgal]

Ahhh thank you duckman

[gbauto]

That fixture will probably run around 110-120 degF surface temp. Running a typical extraction/circulation fan should keep tent temps around 80 if the room temps are in the 70's.

[GinFizzLuv]

That fixture will probably run around 110-120 degF surface temp. Running a typical extraction/circulation fan should keep tent temps around 80 if the room temps are in the 70's.

You are dead on with all those numbers.

Last night I snaked a temp probe through the top of the tent and let it sit on top of the light about an inch away from the driver. I turned on the light and exhaust fan and checked the temp of the probe after 5 hours and it was sitting at 115F.

Temp in the tent was at 80F 2/3 way to the ceiling and 76F on the floor. Outside the tent was 73F.

[gbauto]

I think that if you can maintain those temps and keep the RH in the 50-70% range it'll rock. Good luck with your grow.