Register ICMag Forum Menu Features Search Today's Posts Mark Forums Read
You are viewing our:
in:
Forums > Marijuana Growing > Vertical / Colosseum Growing > Triple stacked 3K automatic

Thread Title Search
Post Reply
Triple stacked 3K automatic Thread Tools Search this Thread
Old 12-29-2018, 04:10 AM #191
ganjourno
Member

Join Date: Sep 2009
Posts: 211
ganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the rough
Quote:
Originally Posted by Chunkypigs View Post
So how did you rig those leds, is it all from scratch?
Yes LEDs are all built from scratch; it's really the only way to LEDify the room for a vert this large. The stack is actively cooled by a 6" fan blowing up through the middle and it exits right into the ceiling casette AC intake, so the heat has no opportunity to enter the room before being cooled. This is important since the one consistent issue I had with this room (until now) was heat buildup. Since it's such a small volume compared to the wattage, it heats up very very quickly. In the past I was using an RV AC unit set on top of the room; this was not ideal since it would cycle on and off. Since there is a minimum 5min off time before it cycles back on, that's five minutes with no AC with 3kw running full blast. The room would go from 78 to 95 in minutes before it kicked back on, which resulted in some strains foxtailing out and a general loss of quality and taste. I also end up replacing the RV ACs like once a year; inevitably they would freeze up or act weird and so after the third unit bit it, I finally wised up and installed a split. The inverter is key since the unit never cycles; so it maintains perfect, even temps with no heat spikes; and the quality benefits so far are obvious. The LEDs also distribute both light and heat more evenly, so I don't have any hot spots causing local heat issues.

Anyways I had a ton of the bridgelux Vero 13 3000k decor COBs that I rescued from a different project that was decommissioned, so I decided to give them new life in this new fixture. Each COB is thermally epoxied to a 40mmx40mm heat sink. I have the SE version of the COBs which have push-in spring connector terminals that make it pretty quick to string up a line of them without soldering. They clip onto a facing sheet of 1/8" acrylic with a plastic clip I designed specially for this purpose and fabricated with the assistance of my friend's laser cutter. Those sheets are then bolted onto a frame int he shape of a hexagon, along with a bottom flange to attach the 6" exhaust fan.

The units on the walls are a simple wooden "U" channel with the same plexiglas clip technique used on the top face. Each section has a 90mm PC fan blowing up through it.

Running 24 LEDs (all in parallel) off each power supply which are 400W rated 48V supplies. Then into a digital buck converter with constant current output, so pushing 320W (10A) at about 32V into each string of 24 LEDs, so each COB sees about 13W. Conventional wisdom is to NOT run the LEDs in parallel due to concerns about thermal runaway, but this hasn't been an issue in practice. All the heat sinks are within a couple degrees of each other after running them for a while. I believe the active cooling approach helps mitigate these concerns by keeping the junction temperature under control, making it impossible for a runaway event to occur.

Anyway, totally recommend COB leds over HID. It's an investment, but if yield increases by 25% and quality by 50%, it pays itself back quite quickly (not to mention cost of swapping bulbs every run otherwise). I mean, with my typical pull being 4-5 elbows under 3kw HID, an extra 25% is at least another elbow per run, which would pay for the lights and then some in just 2 runs.

Total material cost of the LEDs (all in including power supplies, fans, COBs, buck converters, wires, plexiglas, etc), is around $2500. And of course probably about 100 hours of labor

Last edited by ganjourno; 12-29-2018 at 04:25 AM..
ganjourno is offline Quote


3 members found this post helpful.
Old 12-30-2018, 10:23 AM #192
ganjourno
Member

Join Date: Sep 2009
Posts: 211
ganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the rough
Day 44F:



ganjourno is offline Quote


12 members found this post helpful.
Old 12-30-2018, 03:03 PM #193
Fred Sanford
Member

Fred Sanford's Avatar

Join Date: Mar 2013
Location: Colorado Rocky Mountain High
Posts: 179
Fred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of lightFred Sanford is a glorious beacon of light
Very very nice friend. Looks like a pleasure to operate.
Fred Sanford is offline Quote


Old 01-02-2019, 04:20 AM #194
ganjourno
Member

Join Date: Sep 2009
Posts: 211
ganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the rough
Happy new year everyone! Ultraviolence bud Day 46:

ganjourno is offline Quote


9 members found this post helpful.
Old 01-03-2019, 07:34 AM #195
nickman
Senior Member

Join Date: Dec 2010
Posts: 3,845
nickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant futurenickman has a brilliant future
Unbelievable such a nice room...
__________________
"I'm chain smokin loud like it's a newport ...

nickman is offline Quote


Old 01-13-2019, 05:27 AM #196
ganjourno
Member

Join Date: Sep 2009
Posts: 211
ganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the roughganjourno is a jewel in the rough
Pulled down today. Looking very good.



Ultraviolence:



Pineapple upside-down cake (test grow):


Blueberry Muffins (test grow):
ganjourno is offline Quote


7 members found this post helpful.
Old 01-14-2019, 07:15 PM #197
bilko
Member

bilko's Avatar

Join Date: Jan 2018
Location: above the clouds
Posts: 177
bilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nicebilko is just really nice
Quote:
Originally Posted by ganjourno View Post
Pulled down today. Looking very good.

View Image

Ultraviolence:
View Image
View Image

Pineapple upside-down cake (test grow):
View Image

Blueberry Muffins (test grow):
View Image
beautiful buds and great setup well done
bilko is offline Quote


1 members found this post helpful.
Old 02-07-2019, 02:51 AM #198
R1Medic
Newbie

Join Date: Jan 2019
Posts: 4
R1Medic is on a distinguished road
One of the most amazing looking setups. So clean and professional. I hope mine comes out looking this good.
R1Medic is offline Quote


Old 02-21-2019, 02:15 AM #199
isthislegal
Member

Join Date: Jan 2010
Posts: 34
isthislegal is on a distinguished road
ganjourno = LEGEND
isthislegal is offline Quote


Old 02-23-2019, 04:12 AM #200
Iamnumber
Member

Join Date: Jan 2016
Posts: 170
Iamnumber will become famous soon enoughIamnumber will become famous soon enoughIamnumber will become famous soon enough
Great Thread, Thank you kindly Sir!


I am using your setup as 'expert Vscrog' while I compare different styles. You stated that you got 0.75 and 0.8 gpw ( standard grow cycle )


I would like to ask what is your space usage? Specifically, what is your grow room dimentions WxDxH? and how are pots, scrog and light arranged within it?
as far as I can see from your post i gather:
room is ~7ft by 7ft. by 8ft 4 inch (H)



and position of items (how the space is used)

wall
12 inch for pot
12 inch for scrog
12 inch space to light column
4 inch light column (radius only assuming/ guessing 8 inch diameter)
center of room.

4 inch light column
12 inch space to light column
12 inch for scrog
12 inch for pot
opposite wall.


6 screens in hexagonal shapes maybe 20 inch by 5ft? flower area?
that would give 180 inch by 5 ft = 15ft by 5 ft = 75 ft2 flower area?


flat setup for the room would be ~50 ft2 .. so vscrog effectively gives you 1.5 times the flower area of the foot print area with added benefit of better access to plants. it is my understanding that notable downside is the work required to do the vscrogging? would you agree?


I noted you had extra lamps in corners.. are you flowering on each side of the scrog? I can see the benefit in this with leds.


I wrote down what I had gathered to show that I have done what homework I could based on your shared experience. I am trying to figure out which of the potential grow styles and grow mediums would suit me and how effective each is in utilizing available resources like space and energy.


Happy growing and stay safe!


PS are those 4 inch by 4 inch or 5 inch by 5 inch holes in white metal(?) grid?
Iamnumber is offline Quote


Post Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT +2. The time now is 01:26 AM.




This site is for educational and entertainment purposes only.
You must be of legal age to view ICmag and participate here.
All postings are the responsibility of their authors.
Powered by: vBulletin Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.