Why Not A DIY Small Grow Box?

Silent.Moine82 · Jun 6, 2025

Hey What's Up Guys?!!!

Haven't been through in a bit, so I came back and I have completed my Small Grow Box.

For those who like me, like DIY to save money or are short on it, here I have a DIY for ya'

First of all the Box part...
I used strong industrial carton and a Windshield Solar Panel for the reflection...

Then I moved on to the cover for a perfect fit and an absolute sealing, so no light during dark hours...In the middle of the lid I attached a wooden bar (a useless photo frame) to strengthen the led and lead my cable straight and hanging in the middle

To Finsih I cut a small slot in the box's body so my cable commes into the box nicely lined up with the middle of the whole system...

And in I put the light, a 300W Full Spectrum bulb.

There you have it guys and I hope my DIY will help out the needy and don't hesitate to contact me if you want precise, in depth info on the construction of this box. I will be more than happy to help

RoadKillSkunkHunt · Jun 6, 2025

Silent.Moine82 said:
Hey What's Up Guys?!!!

Haven't been through in a bit, so I came back and I have completed my Small Grow Box.

For those who like me, like DIY to save money or are short on it, here I have a DIY for ya'

First of all the Box part...
I used strong industrial carton and a Windshield Solar Panel for the reflection...
View attachment 2449046
View attachment 2449047

Then I moved on to the cover for a perfect fit and an absolute sealing, so no light during dark hours...In the middle of the lid I attached a wooden bar (a useless photo frame) to strengthen the led and lead my cable straight and hanging in the middle
View attachment 2449048 View attachment 2449049 View attachment 2449051

To Finsih I cut a small slot in the box's body so my cable commes into the box nicely lined up with the middle of the whole system...
View attachment 2449050

And in I put the light, a 300W Full Spectrum bulb.
View attachment 2449052

There you have it guys and I hope my DIY will help out the needy and don't hesitate to contact me if you want precise, in depth info on the construction of this box. I will be more than happy to help

Heat will potentially be a problem. You will want to look at intake and exhaust air ... and will likely need to use a fan to keep things cool enough. Also swap the Blurple for a full spectrum white light. With a few mods here and there, you could potentially bring one plant at a time to harvest.

My "small" grow box is a 5 x 5 tent so I don't see myself utilizing your approach, but still it would work with a few tweaks.

HerbalEdu · Jun 6, 2025

yeah just a not too big hole (eventually with a cover) top to at least passively evacuate hot air.

i had smaller carton boxes like that for clones and flowering bonsaï plants in small cup. (but with 30W only)

amneziaHaze · Jun 6, 2025

damn 300W and it looks like you have 0 holes.
but did you think about how big your pot will be and how far away the lamp has to be to not burn the plant? is that tall enough
mine is super tight late in flower plants barley manage in it
you can buy one of these round chimney holes it looks like a tophat but the standard fi100 hole fits perfectly on it soo you can put a fan.and for airintake i did holes on the bottom for mine

ps because your light is pink its not a full spectrum its more just blue and red diodes.

HerbalEdu · Jun 6, 2025

yeah did not seen that, 300W for a space that small that might produce a lot of heat and you'll need a strong fan or extractor to evacuate hot air.

i m not familiar with this kind of bulb any link to the specifications ?

also seem to be a blurp led light, i'd doubt it's true 300W being that small, may be what they call 300W equivalent. it's a common pratice for such bulb.

RoadKillSkunkHunt · Jun 6, 2025

HerbalEdu said:
yeah did not seen that, 300W for a space that small that might produce a lot of heat and you'll need a strong fan or extractor to evacuate hot air.

i m not familiar with this kind of bulb any link to the specifications ?

I'm assuming the bulb isn't consuming an actual 300 watts. It's probably no more than 50 watts of actual energy draw. The 300w is more likely marketing a bulb "with brightness like" 300 watts of incandescent light.

neneboob · Jun 6, 2025

Yeah I also wouldn't trust that light to actually be 300w Looks like one of the ones for house plants. Also that color doesn't look like any full spec light I've seen.

Silent.Moine82 · Jun 6, 2025

HerbalEdu said:
yeah just a not too big hole (eventually with a cover) top to at least passively evacuate hot air.

i had smaller carton boxes like that for clones and flowering bonsaï plants in small cup. (but with 30W only)

Yep! My bad dude...it is the equivalent of 300W...forgot to mention. Sorry!

Silent.Moine82 · Jun 6, 2025

RoadKillSkunkHunt said:
I'm assuming the bulb isn't consuming an actual 300 watts. It's probably no more than 50 watts of actual energy draw. The 300w is more likely marketing a bulb "with brightness like" 300 watts of incandescent light.

Yep, just realized I didn't mention 300W equivalent. My bad

Silent.Moine82 · Jun 6, 2025

neneboob said:
Yeah I also wouldn't trust that light to actually be 300w Looks like one of the ones for house plants. Also that color doesn't look like any full spec light I've seen.

Actually I think it must be the phone that explodes the brightness 'cause when I turn it on in the dark, no way in hell does it get that bright. I can barely see the plate on the bottom of the box on the pic

Silent.Moine82 · Jun 6, 2025

RoadKillSkunkHunt said:
Heat will potentially be a problem. You will want to look at intake and exhaust air ... and will likely need to use a fan to keep things cool enough. Also swap the Blurple for a full spectrum white light. With a few mods here and there, you could potentially bring one plant at a time to harvest.

My "small" grow box is a 5 x 5 tent so I don't see myself utilizing your approach, but still it would work with a few tweaks.

Nope, my bad man. I didn't mention 300W equivalent and my box is 20" x 20" x 31" just to start one plant. It's my first time growing so I decided to start with just one.
Then I have a much bigger adjustable tent that I am actually building which will mesure 24" x 24" x 60".
I'm pretty sur the heavily marked blue 'n' purple aspect of the color is due to the phone because I have no way as much brightness when I look at it.

RoadKillSkunkHunt · Jun 6, 2025

Silent.Moine82 said:
Nope, my bad man. I didn't mention 300W equivalent and my box is 20" x 20" x 31" just to start one plant. It's my first time growing so I decided to start with just one.
Then I have a much bigger adjustable tent that I am actually building which will mesure 24" x 24" x 60".
I'm pretty sur the heavily marked blue 'n' purple aspect of the color is due to the phone because I have no way as much brightness when I look at it.

No worries about any of that. To grow bud, you need to be able to control temperatures and micro-climates. Figure out a way to add cool intake air from the bottom and exhaust hot air out the top ... and something that will move that air through the plant so the leaves are always dancing gently in the breeze. If you can do that, you can grow pot ... one plant at a time. That is, if your "full spectrum led bulb" is indeed full spectrum.

Silent.Moine82 · Jun 6, 2025

RoadKillSkunkHunt said:
No worries about any of that. To grow bud, you need to be able to control temperatures and micro-climates. Figure out a way to add cool intake air from the bottom and exhaust hot air out the top ... and something that will move that air through the plant so the leaves are always dancing gently in the breeze. If you can do that, you can grow pot ... one plant at a time. That is, if your "full spectrum led bulb" is indeed full spectrum.

Yep that's what I'm trying to figure out and going to the store tommorrow to find intake and out-take units.....saw some in a Hardware Store. I just have to check out what the working speed is on the things in cubic meters.
As for the light, I am waiting to get paid and ordering the PHLIZON 200W Dimmable LED PANEL. This one was given to me by one of my buds at work who used to grow and told me to be careful and add 5 to 10 centimeters more of space as I would with a normal LED panel.

RoadKillSkunkHunt · Jun 6, 2025

Silent.Moine82 said:
Yep that's what I'm trying to figure out and going to the store tommorrow to find intake and out-take units.....saw some in a Hardware Store. I just have to check out what the working speed is on the things in cubic meters.
As for the light, I am waiting to get paid and ordering the PHLIZON 200W Dimmable LED PANEL. This one was given to me by one of my buds at work who used to grow and told me to be careful and add 5 to 10 centimeters more of space as I would with a normal LED panel.

Be sure to use the dimmer because that could easily be too much light in your space. Another thought would be to run 24" warm white LED T8's in each of the corners running vertically. You could probably grow an ounce or 2 with those alone in there as your lights. Bottom line though ... get rid of the heat so the box stays upper 70's to low 80's at all times during lights on.

Natep · Jun 6, 2025

It’s being that short it will be tough during the stretch.

Silent.Moine82 · Jun 6, 2025

RoadKillSkunkHunt said:
Be sure to use the dimmer because that could easily be too much light in your space. Another thought would be to run 24" warm white LED T8's in each of the corners running vertically. You could probably grow an ounce or 2 with those alone in there as your lights. Bottom line though ... get rid of the heat so the box stays upper 70's to low 80's at all times during lights on.

Thanks for the tip man! That's awesome Will note the info in my WEED FOR IDIOTS 101 book

What about humidity, what's a good scale?

I am planning to grow in my music room. No light at all when dark and humidity around 66% on rainy days based on my humidity mesures and basically always at 71 - 75 degrees, rain or shine.
My room is in the basement. Seeing the readings of my humidity and temperature, might not even need a tent

I don't know, just joking around.

Silent.Moine82 · Jun 6, 2025

Natep said:
It’s being that short it will be tough during the stretch.

That's why I am building a bigger tent. This one is just to start the baby off.

figolus · Jun 6, 2025

c'est bibi qui avait raison

amneziaHaze · Jun 7, 2025

Silent.Moine82 said:
That's why I am building a bigger tent. This one is just to start the baby off.

It could grow with crazy lst

Silent.Moine82 · Jun 7, 2025

figolus said:
c'est bibi qui avait raison

Raison sur quoi mon kiki?

J'aurais jamais oser dire que t'avais tord sur un sujet de grow...j'oserais pas contre dire la Sensei

Why Not A DIY Small Grow Box?

Why Not A DIY Small Grow Box?

Silent.Moine82

RoadKillSkunkHunt

HerbalEdu

amneziaHaze

HerbalEdu

RoadKillSkunkHunt

neneboob

Silent.Moine82

Silent.Moine82

Silent.Moine82

Silent.Moine82

RoadKillSkunkHunt

Silent.Moine82

RoadKillSkunkHunt

Natep

Silent.Moine82

Silent.Moine82

figolus

amneziaHaze

Silent.Moine82

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