Grandaddy White Micro LED coco grow

Psyphish

Well-Known Member
Grandaddy White LED Micro cab
Greetings. This will be my first grow journal on this site, and also the first test of my new micro grow cab which I still need to add some finishing touches to.



The grow will take place in the wooden cabinet (W75cm, H75cm, D40cm) that I've lined with Orca film.

I'll be using a cheap chinese COB LED fixture, I haven't tried growing anything with it yet, it was originally meant to only be used for vegging, but it'll have to do. I'm probably going to scrog the plants, but I'll take the screen out once the plants stop stretching.

For ventilation I have a 140mm Noctua fan pulling air out from top right, the intake is just a bunch of small holes drilled next to each other, I'll add more holes later as the temperature is far from optimal. I know the fan is powerful enough to take care of ventilation, but there's simply too much air resistance due to lack of holes. After I've made enough holes I'll attach some filter fabric on them so no dust can get in. I'll also put some filter material in front of the exhaust fan to block light.

I will be using Photoshop's Auto Color setting in future image updates. Here's a picture of how it'll work.



The seeds are germinating now and I'll post the first update once they go in coco. Feel free to comment.

Strain: 2x Connoiseur Genetics - Grandaddy White
Space: Wooden cabinet, 75cm x 75cm x 40cm
Ventilation: 140mm computer fan (182.5 m³/h)
Light: "400w" (rated 200w+-5%)COB LED Grow light
Medium: Coco coir (haven't decided pot size yet)
Nutrients: Advanced Nutrients pH-perfect Sensi Coco A & B
 

Psyphish

Well-Known Member
I decided to add a Peyote Purple into the project for nostalgia reasons. I also changed the fan to a 120mm version because the hole was only 125mm, I used duct tape to cover the excess 5mm. Found some nice 5.5 liter rectangular plastic containers that I've drilled holes to for drainage.

 

Psyphish

Well-Known Member
Changed the fan back to the 140mm one, also added another 125mm hole for intake, it has a 140mm Noctua fan as well. The temperature is still way too high, 32 celsius.
 

Psyphish

Well-Known Member
The COB fixture broke down already, I guess you get what you pay for. One of the drivers probably died.

I'm going to replace the POS fixture with two 80w Hans panels, at least I know that they work.

 

xmatox

Well-Known Member
The COB fixture broke down already, I guess you get what you pay for. One of the drivers probably died.

I'm going to replace the POS fixture with two 80w Hans panels, at least I know that they work.

Damn! Broke already? Are you draining directly onto the wood?
 

Psyphish

Well-Known Member
Day 10: The plants surfaced about 10 days ago, the biggest GDW is a couple of days older. Obviously the growth speed has been pretty slow, but that's most likely due to the bad quality light and high temperatures. All of these problems have now been solved. I've increased the air exhaust and added more intake holes, also changed the broken COB to two 80w Hans panels, they put out A LOT more light than the COB fixture did and they only increase the temperature by a few celsius when the fans run at 9 volts. I have the panels on seedling mode which doesn't turn on all the red LEDs. The three strange looking plants are re-vegging and will leave the cab as soon as I get good clones from them. Also, the Photoshop's auto color function isn't working with the new lights, I might try to calibrate my camera later.

 
>
Top