Any experience with Double Ended HPS?

New_Caprica

New_Caprica

Member
We are getting ready to start our first grow. Nothing huge. 4x4 area for flowering and a 1.5x4 area x2 for vegging. We have 2 sets of 4 bulb T5s for the veg, now we just have the HPS lights to buy. We are not growing to sell.

So just when we finally decided on getting a HPS I stumbled across the Double Ended HPS and of course I am intrigued.

Has anyone used thee before? How do you like them compared to the Single Ended HPS? Is it really worth it to just go with a DE one right from the start? We are thinking of doing a 1000 W DE HPS now, instead of just a Single 1000 W HPS.

Thanks in advance!
 
jesus of Cannabis

jesus of Cannabis

:-)
what size are you looking for, 600 or above I would do the double ended, trying hard not to make a joke here, I found this

http://maximumyield.com/blog/2014/09/01/seeing-double/

Seeing Double
On: September 1, 2014 / By: Lee McCall / In: Features

Double-ended, high pressure sodium (HPS) lighting is emerging from several reputable manufacturers in the hydroponics industry, and it seems like 100% of growers who have given the new technology a try experience exceptionally positive results. So, what makes these lights so special?
 
jesus of Cannabis

jesus of Cannabis

:-)
In fact, after 10,000 hours, double-ended lamps will still output approximately 90% of their original intensity.

The double-ended HPS lamp has been recorded to produce more than 2,000 micromoles, whereas traditional mogul-based technology falls as low as 50% less with identical variables. Think of it this way: you’re using the same amount of energy to produce up to 50% less usable light to your crop. In some cases, this variance is the difference of up to double the yield per lighting fixture replaced.

Now for the good stuff. Research shows that double-ended HPS lights are increasing yields by anywhere from 20%, 30% and 50%. Several reports from side-by-side grows have concluded up to double the yield when swapping a fixture for a fixture. So, how is this possible, especially when using the same amount of input power? Well, as mentioned earlier, the increased micromole output per watt means that increased footprints are applicable. The industry standard 4-ft. by 4-ft. grid per 1,000-W light is easily increased to 6 ft. by 5 ft., and even greater in some cases. Again, reflector design and style will influence the shape of the footprint produced. My recommendation is to implement the air conditioning and go with an open-hood design if the space permits. For basements and other low-ceiling scenarios, air-cooled models will suffice just fine.





makes me want to buy one today and swap mine out, lol, thanks for the question...wish we still had reps, you would be +1000
 
jesus of Cannabis

jesus of Cannabis

:-)
a senile fungus said:
For your first grow, just get anything that works, single ended will do just fine.

You getting a DE for your first grow is like getting a high end car for your 16yo teenager.

But that's not too say people don't do it...
Click to expand...
but if the research is done and they are ready to go and know their bizniss, why not start with a ferrari? shit, thats the way to start if i could do it again, save $$ on construction reapirs from my old eye hooks lol
 
a senile fungus

a senile fungus

Well-Known Member
jesus of Cannabis said:
but if the research is done and they are ready to go and know their bizniss, why not start with a ferrari? shit, thats the way to start if i could do it again, save $$ on construction reapirs from my old eye hooks lol
Click to expand...

I'm not a bad driver by any means, but I wouldn't know what to do with the power and torque of a machine like that.

IMO, a first time gardener will notice gains from improving nearly every facet of their gardening, but the lights won't make much of a difference. Well obviously HID is better than CFL, but I think you get my.point...

Remember, that's my opinion, I'm entitled to it lol
 
New_Caprica

New_Caprica

Member
a senile fungus said:
For your first grow, just get anything that works, single ended will do just fine.

You getting a DE for your first grow is like getting a high end car for your 16yo teenager.

But that's not too say people don't do it...
Click to expand...
I normally feel the same way, just with it being slightly more expensive I am wondering if it is worth it, in my eyes it be like going with a Silverado over a S-10/Colorado.


jesus of Cannabis said:
In fact, after 10,000 hours, double-ended lamps will still output approximately 90% of their original intensity.

The double-ended HPS lamp has been recorded to produce more than 2,000 micromoles, whereas traditional mogul-based technology falls as low as 50% less with identical variables. Think of it this way: you’re using the same amount of energy to produce up to 50% less usable light to your crop. In some cases, this variance is the difference of up to double the yield per lighting fixture replaced.

Now for the good stuff. Research shows that double-ended HPS lights are increasing yields by anywhere from 20%, 30% and 50%. Several reports from side-by-side grows have concluded up to double the yield when swapping a fixture for a fixture. So, how is this possible, especially when using the same amount of input power? Well, as mentioned earlier, the increased micromole output per watt means that increased footprints are applicable. The industry standard 4-ft. by 4-ft. grid per 1,000-W light is easily increased to 6 ft. by 5 ft., and even greater in some cases. Again, reflector design and style will influence the shape of the footprint produced. My recommendation is to implement the air conditioning and go with an open-hood design if the space permits. For basements and other low-ceiling scenarios, air-cooled models will suffice just fine.

makes me want to buy one today and swap mine out, lol, thanks for the question...wish we still had reps, you would be +1000
Click to expand...
See what I mean? How do you not want to get one? I am so annoyed the more I read the harder it is to pick out something!! This has been over a month trying to pick out a damn flowering light!


jesus of Cannabis said:
but if the research is done and they are ready to go and know their bizniss, why not start with a ferrari? shit, thats the way to start if i could do it again, save $$ on construction reapirs from my old eye hooks lol
Click to expand...
Again, how I am feeling too!

I might just take the plunge......I was hoping to hear some other Been there done that sort of experience before we make out choices. I worry about buying a single then 3 months later the husband goes out and buys a DE.
 
a senile fungus

a senile fungus

Well-Known Member
New_Caprica said:
I normally feel the same way, just with it being slightly more expensive I am wondering if it is worth it, in my eyes it be like going with a Silverado over a S-10/Colorado.




See what I mean? How do you not want to get one? I am so annoyed the more I read the harder it is to pick out something!! This has been over a month trying to pick out a damn flowering light!




Again, how I am feeling too!

I might just take the plunge......I was hoping to hear some other Been there done that sort of experience before we make out choices. I worry about buying a single then 3 months later the husband goes out and buys a DE.
Click to expand...

Take the plunge then! They aren't that much more expensive, and the bulbs last much longer. Bulbs are more expensive though...

But, bear in mind that these DE produce more heat than their single ended counter parts, and that heat will have to be dealt with via air movement or AC.

Good luck! I'll be honest, I spend extra $ on nice equipment when I started and I still have some really nice stuff.... I'm glad that I never bought equipment just for the first grow, I was always planning to expand.

Good luck to you!
 
New_Caprica

New_Caprica

Member
a senile fungus said:
Take the plunge then! They aren't that much more expensive, and the bulbs last much longer. Bulbs are more expensive though...

But, bear in mind that these DE produce more heat than their single ended counter parts, and that heat will have to be dealt with via air movement or AC.

Good luck! I'll be honest, I spend extra $ on nice equipment when I started and I still have some really nice stuff.... I'm glad that I never bought equipment just for the first grow, I was always planning to expand.

Good luck to you!
Click to expand...
It wasn't my goal to buy all the nice things up front-my husband is impatient and refuses to buy cheap. Since we are already planning on buying a HPS, what is another 150 at this point?

In my short 3 hours of knowing about these I have found some that have those cooling tubes. Do those work well?
 
Bbcchance

Bbcchance

Well-Known Member
New_Caprica said:
It wasn't my goal to buy all the nice things up front-my husband is impatient and refuses to buy cheap. Since we are already planning on buying a HPS, what is another 150 at this point?

In my short 3 hours of knowing about these I have found some that have those cooling tubes. Do those work well?
Click to expand...
I don't know anything about the double ended hps, but with a reg hps the cool tubes work just fine, if you plan on switching out bulbs mh/hps I'd go with the air cooled hood, the drop down cover is nice to have so you don't have to unclamp your ducting
 
New_Caprica

New_Caprica

Member
a senile fungus

a senile fungus

Well-Known Member
New_Caprica said:
https://growlightcentral.com/collections/hid-grow-lights/products/yield-lab-double-ended-air-cool-hood-hid-grow-light-reflector

I came across this brand, and I am thinking about calling the company and seeing about upgrading the hood in one of the kids to this hood, between that and our Active Air 400 CFM Inline Fan, and a rotating larger fan I am hoping temp we will be okay? We are doing this in our basement so we are lucky there, our basement is probably at the hottest 65 degrees.
Click to expand...
The DE bulbs have a specific operating temp and air cooling them directly isn't recommended. They make an air cooled double ended reflector AC/DE that cools the back of thr reflector, and doesn't directly run air across the bulb.
 
bluntmassa1

bluntmassa1

Well-Known Member
jesus of Cannabis said:
In fact, after 10,000 hours, double-ended lamps will still output approximately 90% of their original intensity.

The double-ended HPS lamp has been recorded to produce more than 2,000 micromoles, whereas traditional mogul-based technology falls as low as 50% less with identical variables. Think of it this way: you’re using the same amount of energy to produce up to 50% less usable light to your crop. In some cases, this variance is the difference of up to double the yield per lighting fixture replaced.

Now for the good stuff. Research shows that double-ended HPS lights are increasing yields by anywhere from 20%, 30% and 50%. Several reports from side-by-side grows have concluded up to double the yield when swapping a fixture for a fixture. So, how is this possible, especially when using the same amount of input power? Well, as mentioned earlier, the increased micromole output per watt means that increased footprints are applicable. The industry standard 4-ft. by 4-ft. grid per 1,000-W light is easily increased to 6 ft. by 5 ft., and even greater in some cases. Again, reflector design and style will influence the shape of the footprint produced. My recommendation is to implement the air conditioning and go with an open-hood design if the space permits. For basements and other low-ceiling scenarios, air-cooled models will suffice just fine.





makes me want to buy one today and swap mine out, lol, thanks for the question...wish we still had reps, you would be +1000
Click to expand...
Sure a DE might be better but 50%? I don't think so. But if I where to buy another light I would probably get the DE just to see how she likes it in both ends. :bigjoint:
 
a senile fungus

a senile fungus

Well-Known Member
Lol

I looked into it, those hoods are at least $100 more.

What kind of light system are you getting? Got a link/pic?

I run with Gavitas and just make sure to keep air moving between bottom of reflector and canopy.

You are doing a 4x4 space, what is the height? If 8ft or less, you really should not do the 1000w de, its too powerful, you wouldn't even be able to turn it up. I have 8ft ceilings and rock de with a couple of the Gavita 6/750e de.

So, you should look into the Gavita 6/750e de ;-)
 
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