CXB3590 1500W

How much do the reflectors/lens increase intensity of the light? I am looking at some reflectors that will cover an 14inchx14inch area at a certain height. I am just unsure what the best height would be to place the cobs. What height does everyone run there reflected/lensed cobs without bleaching or burning?

Thanks
 
EfficientWatt said:
That isn't a well defined question ..



How many apples can I fit into an undefined size bag ?
If you were to drive on a motorway with 4 lanes, how far would you go ?
How long is a peice of string ?
Click to expand...
how many lights to surround a 4 foot high well vegged bush say 4 foot wide.
it is a plant so there is not a finite size.everything i read on here is based on flat grows.
if i run 200 watts per side but the light from all sides can penetrate through that would be total over kill.
the height is defined .the width will be different every plant. i am asking for a baseline guestimate for lighting the plant 360 degrees.
 
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zep_lover said:
how many lights to surround a 4 foot high well vegged bush say 4 foot wide.
it is a plant so there is not a finite size.everything i read on here is based on flat grows.
if i run 200 watts per side but the light from all sides can penetrate through that would be total over kill.
the height is defined .the width will be different every plant. i am asking for a baseline guestimate for lighting the plant 360 degrees.
Click to expand...

That's a tough one... Without knowing the total square feet you plan to provide light for.

The reason for flat grows as opposed to 360 is for the ease of adjustability to the canopy .
Side lighting is often times supplemental and in fixed positions because most people are limited to a confined space ,therefore making it cumbersome to continually reposition to relative distances.

Have a general idea as to how many square feet you are trying to facilitate and these guys will have ample suggestions. In reference to your comment about the plant being 4ft tall and 4ft wide... It might be that you are looking to "light up" 16 square ft - in which case there are infinite possibilities that I will defer to those better suited to instruct.

Good luck.... Sounds interesting!
 
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zep_lover said:
how many lights to surround a 4 foot high well vegged bush say 4 foot wide.
it is a plant so there is not a finite size.everything i read on here is based on flat grows.
if i run 200 watts per side but the light from all sides can penetrate through that would be total over kill.
the height is defined .the width will be different every plant. i am asking for a baseline guestimate for lighting the plant 360 degrees.
Click to expand...

This only answers half the question. I posed mine differently and I was careful to define what I wanted; I wanted to get 800 PPfD or more @50% or better efficiency over my trellis panel that's four feet across by six feet tall, for a total of twenty four square feet on a flat plane... in my case, a flat vertical plane.

This defines size, shape and light intensity. In addition, it helps define the LED lighting approach because I wanted somewhat higher efficiency. I wasn't willing to settle for forty something percent efficiency- but sixty plus was too expensive.

At this point, it was relatively straightforward to find the best combination suited to filling the above requirements. I ended up with a design that uses four CXB3590 chips and a 200W driver (forgot the Meanwell part number) to light a 2'x3' area. That's exactly one quarter of my trellis, so four of them will do a great job if evenly lighting my trellis panel for 800W. If that doesn't sound like much power savings over using HID lighting, consider that in order to get the same PPfD on my canopy with HPS, I'd need easily twice the wattage.

I hope this also helps; begin with the end goal firmly in mind. If people complain about the goal being vague, use that as an invitation to better define what that end goal looks like.
 
ttystikk said:
This only answers half the question. I posed mine differently and I was careful to define what I wanted; I wanted to get 800 PPfD or more @50% or better efficiency over my trellis panel that's four feet across by six feet tall, for a total of twenty four square feet on a flat plane... in my case, a flat vertical plane.

This defines size, shape and light intensity. In addition, it helps define the LED lighting approach because I wanted somewhat higher efficiency. I wasn't willing to settle for forty something percent efficiency- but sixty plus was too expensive.

At this point, it was relatively straightforward to find the best combination suited to filling the above requirements. I ended up with a design that uses four CXB3590 chips and a 200W driver (forgot the Meanwell part number) to light a 2'x3' area. That's exactly one quarter of my trellis, so four of them will do a great job if evenly lighting my trellis panel for 800W. If that doesn't sound like much power savings over using HID lighting, consider that in order to get the same PPfD on my canopy with HPS, I'd need easily twice the wattage.

I hope this also helps; begin with the end goal firmly in mind. If people complain about the goal being vague, use that as an invitation to better define what that end goal looks like.
Click to expand...
you are planning on lighting a 4 foot by 6 foot trellis with 800 watts spread evenly over the trellis.i grow this way now like you do but with hps.
i am planning to light a 4 foot tall by 4 foot wide area with the light being applied from all sides towards each other.i am not sure on how to calculate how many watts due to the high power and penetration of the cob.
do i calculate by square footage of each side of the plant like a flat grow and consider there is 4 sides to the plant?now my number of cobs just quadrupled
most people growing horizontally have any where from 2 foot tall plants to 6 foot tall plants indoors.
if the plants grow great from root to top using these formulas for lighting from one direction,do i use the same number of cobs spread evenly on all sides?
if some people can chime in on how tall their plants are and how good the plant is at the bottom will help give me a better idea on how many chips i need to order for this test.
my idea for this is based on the krusty method where you have 4 plants surrounded with 5 1000 watt hps so each plant is always lit up from 3 sides.
i think i will order 20 cxb3590 and try one plant with 2 on each side for a total of 400 watts and 1 plant with three on each side.
 
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zep_lover said:
you are planning on lighting a 4 foot by 6 foot trellis with 800 watts spread evenly over the trellis.i grow this way now like you do but with hps.
i am planning to light a 4 foot tall by 4 foot wide area with the light being applied from all sides towards each other.i am not sure on how to calculate how many watts due to the high power and penetration of the cob.
do i calculate by square footage of each side of the plant like a flat grow and consider there is 4 sides to the plant?now my number of cobs just quadrupled
most people growing horizontally have any where from 2 foot tall plants to 6 foot tall plants indoors.
if the plants grow great from root to top using these formulas for lighting from one direction,do i use the same number of cobs spread evenly on all sides?
if some people can chime in on how tall their plants are and how good the plant is at the bottom will help give me a better idea on how many chips i need to order for this test.
my idea for this is based on the krusty method where you have 4 plants surrounded with 5 1000 watt hps so each plant is always lit up from 3 sides.
i think i will order 20 cxb3590 and try one plant with 2 on each side for a total of 400 watts and 1 plant with three on each side.
Click to expand...

First problem; what you're lighting isn't a flat plane. Easy solution; tighter lenses.

Big difference between COBs and HID lighting in vertical situations- and yours is a form of vert- is that HID is omnidirectional and needs reflectors to direct light whereas COBs are fairly directional out of the box, and lenses can make them much more so. This impacts how you can install them and how you light the plant.

Are you not planning to light the top at all?

You're aware that you can run the same COB at different outputs to achieve different light levels, each with its own efficiency rating? That will also play into the design...

I'm not calling you out. I think you're sincere and I think your goal of using COBs as lighting for what I like to call the 'gumdrop shape' style of big indoor trees is worth doing. Instead, I'm asking the kinds of questions I would need to answer if I were in your shoes building it.
 
ttystikk said:
First problem; what you're lighting isn't a flat plane. Easy solution; tighter lenses.

Big difference between COBs and HID lighting in vertical situations- and yours is a form of vert- is that HID is omnidirectional and needs reflectors to direct light whereas COBs are fairly directional out of the box, and lenses can make them much more so. This impacts how you can install them and how you light the plant.

Are you not planning to light the top at all?

You're aware that you can run the same COB at different outputs to achieve different light levels, each with its own efficiency rating? That will also play into the design...

I'm not calling you out. I think you're sincere and I think your goal of using COBs as lighting for what I like to call the 'gumdrop shape' style of big indoor trees is worth doing. Instead, I'm asking the kinds of questions I would need to answer if I were in your shoes building it.
Click to expand...
i am not sure if i will need to light from the top.i originally planned to light from the top also
i am not sure if i need to use lens.
that was the point of my asking what others thought.
i only have 3 50 watt cobs laying around. all my plants are tied up one to a wall and shaped for a single plane grow around double stacked 600 watt hps.
i can not try and see how well it would work without a normal shaped plant in my possesion.
i have plant counts to remain medically compliant and no space to just grow one plant like this as of now but will shortly and want to be as ready as possible.
thank you ttystick for at least helping me ask better questions instead of just being a dick
 
Bonjour
But the time past in cro really worth it?
I used to pull 420/460gr every 100days from my 4x4 in soil under a 600hps in 11L (9 plants)
Give me the same info please to compare.
Thanks
 
littlejacob said:
Why not directly a scrog!??
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it is a scrog.the plant is tied to the wall usually one layer thick.i have 4 plants in a 6 foot high cabinet 4 foot wide and 4 foot deep.
i have 1 plant tied to netting on each wall and 1 removable rack in the door way with another plant tied to that.i run two digital 600 hps bulbs in there with a 8 inch fan and carbon filter directly above the bulbs.
if i ran a normal horizontal scrog i would have 16 square feet.
by using bare bulb and each wall and the door as individual scrogs i have 16 sq feet on each wall (the other 2 feet of 6 feet is for my containers for the plants)
 
littlejacob said:
Bonjour
But the time past in cro really worth it?
I used to pull 420/460gr every 100days from my 4x4 in soil under a 600hps in 11L (9 plants)
Give me the same info please to compare.
Thanks
Click to expand...
i usually pull around 900 grams in 12 week cycle.i have pulled 1200+ grams a few times.i have been growing this way maybe 5 years now.
i start shaping the plant like a candelabra after it is 8 inches high and trim the front and back off so it is one layer thick
 
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