My First Time: AK47 & Gold Bar Kush

[JimmyJames905]

Re: My First Time - AK47 & Gold Bar Kush

Oh neat they are starting to say Cobs are the future. Well not starting but they are gaining more popularity as time moves on.

No they are absolutely the future. I've been using them since 2015 and I've seen them go from "good for closet grows" to "outperforms 1000w HPS/Metal halide" in 2 years.
They work so well and use so much less electricity I sold all my HID lights including a fairly new CMH 315w.
My grows now get 1.9 grams per watt and my hydro bill is 75% less.

 

[MrGreene]

Cobs are for sure the way to go.

I want some vero 29 but the budget keep happening. Single dad paying 1/3 of my check in child support plus alimony keeps things tight.

The vero 18 price looks a lot better but I wonder if it works out about the same by the time you have to add so many.

 

[JimmyJames905]

Cobs are for sure the way to go.

I want some vero 29 but the budget keep happening. Single dad paying 1/3 of my check in child support plus alimony keeps things tight.

The vero 18 price looks a lot better but I wonder if it works out about the same by the time you have to add so many.

Yes. It works out the same. But you get more spread. Cutter Australia has them pre build under Growmau5 kits. Kinda pricy for what you can build them for. Cost should be 33 Aussie bucks each with heatsink and driver. 5 per driver.

 

[MrGreene]

I was just looking at the 1750 vero 18 at cutter and they show it having a forward voltage of 35 and if you click on it to see more details it shows the forward voltage being 68. Do you know which is correct?

 

[JimmyJames905]

The Vero 18 1750k D series should be 29v at 1050
The Vero 29 they carry is the 100w C series. It's 69v
Try furtive electronics
Search bxrc-17e select "in stock". They only stock the one model. D series. 29v.

 

[JimmyJames905]

My First Time - AK47 & Gold Bar Kush

The one at cutter is the c series Vero 18. You could use that. It's a fair price. C series v18 runs 34.6v at 1050ma. You can run 4 on a HLG-120h-c1050

 

[MrGreene]

Re: My First Time - AK47 & Gold Bar Kush

Are you running just the 1750 in flower or do you have another color mixed in?

 

[MrGreene]

Re: My First Time - AK47 & Gold Bar Kush

I found the D series at Future. It is tempting to go ahead and order a few but I'll sleep on it.

 

[alantesla33]

Their are 2 types of UV light are you using A or B?

 

[alantesla33]

The next 25-30 days will make a huge difference in the THC content and related effects. Any thing you try now is a waste of the your time and the plants energy. You might as well toss a bud in the trash on harvest day.

You can snip the top 1/8th inch off the buds to stimulate what is known as bud build back. It's using the same systems as FIMing

 

[alantesla33]

Boom why you can't produce with CFL
"- Fluorescence, which is light emitted by plants. This light is created by photosynthesis and consists of wavelengths other than those from the supplied light."

 

[JimmyJames905]

Their are 2 types of UV light are you using A or B?

You forgot C.
But judging by the color (so close to Purple) it's probably mostly violet light mixed with UVA. Lights that are high in mostly UVB are light blue and can barely be seen. And bulbs high in UVC are mostly invisible.

 

[MrGreene]

Their are 2 types of UV light are you using A or B?

These were advertised as 395 nm so I think that makes them UVA.

I read about back building a while back but don't remember when is the best time to do it.

 

[alantesla33]

My First Time - AK47 & Gold Bar Kush

These were advertised as 395 nm so I think that makes them UVA.

I read about back building a while back but don't remember when is the best time to do it.

Fuck I forgot when the prime time is when I read this. Maybe someone else knows if not I'll check it out. It's in my notes somewhere.

 

[JimmyJames905]

These were advertised as 395 nm so I think that makes them UVA.

I read about back building a while back but don't remember when is the best time to do it.

Right on the cusp of uva.

 

[Radogast]

Re: My First Time - AK47 & Gold Bar Kush

If you're a interested in a low cost flower cob try the Vero 18 BXRC-17E4000-D-74. They're $12 CAD each and you can run 5 on a very cheap Meanwell HLG-120h-C1050
They are red AF! Bridgelux markets it as a HPS replacement and it pumps out that 650nm-750nn reds (and infra red) you can't get from any other cob.
Here's the vid I made.
PAR Testing the BXRC-17E Vero 18. Tent test. - YouTube

Watched the video - good info.

I flower in a 4x6' room but I only use 4x4' for the actual plants. With the measured drop off, would 16 of these BXRC-17E Vero 18s in a 4x4 array be the right size to replace my HPS? What kind of wattage would that be at the wall?

I also noticed you didn't measure at further distances than 8 inches. Does the Inverse Square Law (affecting light penetration) apply equally to all frequencies of light?

 

[MrGreene]

I decided to copy a light frame that HashHound built for SweetSue so I would have a way to hang more cobs and adjust their positions before making a permanent frame out of one inch aluminum angle.

It seemed to work out pretty good so I finished tapping the next four heat sinks, wired up some chips, and hooked up the HLG-185H-C1400B to power them with. I also wired up a 2 amp 12v power supply for the fans. I used two full spectrum 380-840 nm cobs to see if they do any better than the warm white 3000-3200 k cobs.

Everything seemed to run ok, so I installed them on the frame.

The four on the inventronics driver are running at 120 watts (30w each), the four on the meanwell driver are set at 155 watts right now(about 39 watts each), and the fans and power supply are pulling another 20 watts for a total of 295 watts being used in the flower tent. The lights are 9 inches above AK right now. It looks like much better penetration but I'm sure I'll need to watch and make sure it isn't too much light.

 

[Hash Hound]

nice job MrGreene

I found the ceiling track a bit easier to work with than the stock aluminum I used for Sue's second set of frames.

I will probably reuse one of the original frames when I stream line the Vero240 she gave me.
It's a big unit.
I'm also thinking of incorporating a reflector.

 

[SweetSue]

I decided to copy a light frame that HashHound built for SweetSue so I would have a way to hang more cobs and adjust their positions before making a permanent frame out of one inch aluminum angle.

It seemed to work out pretty good so I finished tapping the next four heat sinks, wired up some chips, and hooked up the HLG-185H-C1400B to power them with. I also wired up a 2 amp 12v power supply for the fans. I used two full spectrum 380-840 nm cobs to see if they do any better than the warm white 3000-3200 k cobs.

Everything seemed to run ok, so I installed them on the frame.

The four on the inventronics driver are running at 120 watts (30w each), the four on the meanwell driver are set at 155 watts right now(about 39 watts each), and the fans and power supply are pulling another 20 watts for a total of 295 watts being used in the flower tent. The lights are 9 inches above AK right now. It looks like much better penetration but I'm sure I'll need to watch and make sure it isn't too much light.

Sweet..... Excellent job MrGreene. I've been keeping mine around 12" and they show no stress at all. I'll be interested to see how yours fare at 9".

Boom why you can't produce with CFL
"• Fluorescence, which is light emitted by plants. This light is created by photosynthesis and consists of wavelengths other than those from the supplied light."

I'm sorry, but are you suggesting one can't get a decent harvest from CFLs? I'll have to prove you wrong, if that's the case.

23watt CFLs are so efficient that you can definately use them to get a stellar harvest. I got 4.5 oz out of these two, and the crazy way I kept those CFLs right on top of the plants kinda made me famous around these parts. Gosh, it was fun to grow those two. That was my first grow, back when I knew less than nothing about what I was doing. Those CFLs made my plants sing.

It's not the type of light, but the way you use them. I proved that you could grow with CFLs. In the end I had almost 400 watts running in that closet.

 

[Radogast]

I decided to copy a light frame that HashHound built for SweetSue . . .

The four on the inventronics driver are running at 120 watts (30w each), the four on the meanwell driver are set at 155 watts right now(about 39 watts each), and the fans and power supply are pulling another 20 watts for a total of 295 watts being used in the flower tent.

Kickin' your flower girls into high gear !