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First off the bat I want to thank @Dazed for introducing me to the world of the CREE CXB3590 COB, Growmau5 & Greengenes, thanks brother it has opened up a whole new avenue for me and I plan to build more lights, bigger and better!!highfiveI also want to thank@Dazed & @Fuggzy for their help with components and helping me understand how certain aspects of COB building works.
Unfortunately 11 month ago I had a security problem and one that just wouldn't go away. I had 8 months of maintenance work in my building, so no growing for me.
There was also an incidence where the landlord smelled a little bit of weed on me which didn't help matters. That all seems to be in the past but I remain vigilant in not getting caught growing, so I have opted for a micro grow.
I have been missing growing so much it literally hurt but I wasn't gonna just fire up the cab as soon as the the maintenance was over and risk being caught.
So I thought about it and decided to make an old PC tower I had lying around into a micro grow cab.
It was in conversation with dazed I mention getting a small 50W led (which was made up of 3W Diodes) for the cab.
Dazed then went on to tell me about Growmau5 and Greengenes and how they were building COB grow lights from CREE CXB3590 chips.
I also transpired that Dazed was gonna build one of these CREE COB's and that was it, I was hooked on the Idea!
After watching some youtube videos and doing some looking around the web for suppliers etc I found an ad on Ebay for a single CREE COB kit and so I ordered it, when it arrived it wasn't in kit form but had already been put together.
The build was somewhat of a novice build and not up to my standard, so I rebuilt it.
I will post a thread of the Cab build, which will include pics of the COB as it arrived and what it looked like after the rebuild, a photo step by step build of my micro carbon filter and also a photo step by step of the PC server cab build.
So eventually all the build processes were finished and it was time to drop a bean, after some discussion with various members it was decided, I was gonna go with "Amnesia Stone99" in part this was due to the fact it was a Fem.
I wanted it to be a fem as I was only going to grow one plant and AS99 also had a good bit of power behind it's stoneyness, mmmm sounded just right.
I gave the seed (Amnesia Stone99 from the Autoflower Portal) a bit of light scarification to help remove a little of the seed coat to aid water absorbtion and then soaked it for 12 hours before it cracked.
It was then into a Rootit horticultural sponge and wait for the germed sprout to appear.
It had a bit of trouble with germination, the seed stuck out a tap root nicely but the seed case stayed on like a helmet and remained there.
So I had to go in with a couple of pairs of tweezers and remove the seed case.
You'd have thought all would have gone smoothly thereafter but thing weren't quite a go!
There is a membrane inside the casing which had remained over the tips of the cotyledons which dried and was stopping the cotyledons from opening, so back to the two sets of tweezers.
The removal of the membrane was a very delicate operation, more so than removing the seed casing as the as I didn't want to damage the soft tissue of the cotyledons.
The operation worked but where the membrane had been the tips of the cotyledons remained white/pale but soon the first set of true leaves started to come out and all was good. yay!
I started the count as soon as the cotyledons appeared which was 1st of June and so it has now been going for 16 days.
I treated her mean for the first 13 days and only gave her water until she started showing a slight N def and then fed her @ 1.1 EC 5.6ph (in coco) and started a regime of foliar feeding and she greened right back up.
I wanted to try and keep her small and not encourage too much lush growth. The CXB3590 is fantastically bright and is doing a great job at keeping the nodes tight.
I'm running my COB @ 700mA which means I'm running @ 50% of what my 1400mA driver is capable of and which is about 25% of what the chip is capable of.
Running it @ 700mA gives me the best efficiency, which results in about 60% photons and 40% heat which is right in the sweet spot.
I'll do a list of parts with dimensions of the cab asap but don't have everything to hand right now.
Which means without further a do, it is time for some pics.
I've kept this pic small so you can see the whole cab without scrolling. The COB is dimmed to it's lowest setting in these pictures.The COB is seriously bright, if it was turned up any higher it starts washing out the pictures. I normally have the light @ 50% (In the 700mA zone) and only dim for the pictures.
Almost forgot Temps are generally around the 27C mark but I do adjust the brightness on hot days to lower the temp should it rise too high.
The RH is generally between 40% & 50%
Thanks for dropping by and having a look see and hope you will follow the story to the end.
If anyone is wondering this a full DIY build - the case DIY, CREE COB DIY & Micro Carbon Filter DIY.
I will be doing a build thread for the Cab, COB & Carbon Filter, which will show how all the different components of the cab were built.
All the best
Arty
Unfortunately 11 month ago I had a security problem and one that just wouldn't go away. I had 8 months of maintenance work in my building, so no growing for me.
There was also an incidence where the landlord smelled a little bit of weed on me which didn't help matters. That all seems to be in the past but I remain vigilant in not getting caught growing, so I have opted for a micro grow.
I have been missing growing so much it literally hurt but I wasn't gonna just fire up the cab as soon as the the maintenance was over and risk being caught.
So I thought about it and decided to make an old PC tower I had lying around into a micro grow cab.
It was in conversation with dazed I mention getting a small 50W led (which was made up of 3W Diodes) for the cab.
Dazed then went on to tell me about Growmau5 and Greengenes and how they were building COB grow lights from CREE CXB3590 chips.
I also transpired that Dazed was gonna build one of these CREE COB's and that was it, I was hooked on the Idea!
After watching some youtube videos and doing some looking around the web for suppliers etc I found an ad on Ebay for a single CREE COB kit and so I ordered it, when it arrived it wasn't in kit form but had already been put together.
The build was somewhat of a novice build and not up to my standard, so I rebuilt it.
I will post a thread of the Cab build, which will include pics of the COB as it arrived and what it looked like after the rebuild, a photo step by step build of my micro carbon filter and also a photo step by step of the PC server cab build.
So eventually all the build processes were finished and it was time to drop a bean, after some discussion with various members it was decided, I was gonna go with "Amnesia Stone99" in part this was due to the fact it was a Fem.
I wanted it to be a fem as I was only going to grow one plant and AS99 also had a good bit of power behind it's stoneyness, mmmm sounded just right.
I gave the seed (Amnesia Stone99 from the Autoflower Portal) a bit of light scarification to help remove a little of the seed coat to aid water absorbtion and then soaked it for 12 hours before it cracked.
It was then into a Rootit horticultural sponge and wait for the germed sprout to appear.
It had a bit of trouble with germination, the seed stuck out a tap root nicely but the seed case stayed on like a helmet and remained there.
So I had to go in with a couple of pairs of tweezers and remove the seed case.
You'd have thought all would have gone smoothly thereafter but thing weren't quite a go!
There is a membrane inside the casing which had remained over the tips of the cotyledons which dried and was stopping the cotyledons from opening, so back to the two sets of tweezers.
The removal of the membrane was a very delicate operation, more so than removing the seed casing as the as I didn't want to damage the soft tissue of the cotyledons.
The operation worked but where the membrane had been the tips of the cotyledons remained white/pale but soon the first set of true leaves started to come out and all was good. yay!
I started the count as soon as the cotyledons appeared which was 1st of June and so it has now been going for 16 days.
I treated her mean for the first 13 days and only gave her water until she started showing a slight N def and then fed her @ 1.1 EC 5.6ph (in coco) and started a regime of foliar feeding and she greened right back up.
I wanted to try and keep her small and not encourage too much lush growth. The CXB3590 is fantastically bright and is doing a great job at keeping the nodes tight.
I'm running my COB @ 700mA which means I'm running @ 50% of what my 1400mA driver is capable of and which is about 25% of what the chip is capable of.
Running it @ 700mA gives me the best efficiency, which results in about 60% photons and 40% heat which is right in the sweet spot.
I'll do a list of parts with dimensions of the cab asap but don't have everything to hand right now.
Which means without further a do, it is time for some pics.
I've kept this pic small so you can see the whole cab without scrolling. The COB is dimmed to it's lowest setting in these pictures.The COB is seriously bright, if it was turned up any higher it starts washing out the pictures. I normally have the light @ 50% (In the 700mA zone) and only dim for the pictures.
Almost forgot Temps are generally around the 27C mark but I do adjust the brightness on hot days to lower the temp should it rise too high.
The RH is generally between 40% & 50%
Thanks for dropping by and having a look see and hope you will follow the story to the end.
If anyone is wondering this a full DIY build - the case DIY, CREE COB DIY & Micro Carbon Filter DIY.
I will be doing a build thread for the Cab, COB & Carbon Filter, which will show how all the different components of the cab were built.
All the best
Arty
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