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Lights?

The micro moles per watt from HPS is greater than 1.16. Lol. This guy is comparing new top line CMH bulb technology with old crappy HPS bulb technology. The standard growers bulb is eye hortilux is gets 1.9 micro moles per watt. So I’m calling BS on this guy.
Just food for thought... DE HPS can get up to 2.1 micro moles per watt.
Wouldn’t call that guy or his data reliable.
https://surna.com/why-everyone-should-grow-on-a-5x5-footprint/
 
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The guy literally films his tests using an Apogee PAR sensor. Are you suggesting he's lying, or that the sensor is faulty ?
 
No. I am suggesting exactly what I said above, the data is limited to his case study, which wasn’t a very well rounded one. 1.16 micro moles maybe on a cheap HPS bulb, ill believe that. All the real growers I know that use single ended technology use eye hortilux which are rated at 1.9.
I use double ended HPS bulbs rated at 2.1.
Let’s see him test a real HPS bulb and stack it against those CMH.
HPS is hands down the most efficient at creating photons from electricity for the price tag it carries.
 
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Toker1 ... The advantage I feel the CMH has over MH/HPS is more UVB at one end of the light spectrum, and more Far Red at the other end.

One of the grow guru's at my hydro supply shop has been a licenced Med grower since they started handing out licences. He pulled out a bag of his high grade grown with wide spectrum lighting from behind the counter a while back to let me give it a sniff test, and wow, nice terps. If the lamps that deliver more UVB/far red light make those terps, I'd go that way. Adding a supplemental UVB florescent to a LED or HPS set-up adds over $100 to your lighting costs, which I think you get for free with a CMH. I may be wrong, reading those spec sheets and making apples to apples comparisons is a challenge.

Also, not sure if you consider Ushio's HiLUX bulbs to be high quality, but their single end bulbs are 2100 MMOL/s = to their D.E. bulbs (on paper at least).
 
Picture of HPS with UV-B t5 bulbs going. 15 min on and 2 hrs off during lights on makes the buds look like a sci go space planet with trics.
 

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That could work for me, I'm not keen to rip the ducting to my fixture apart to sub in the MH at the end of a grow.

Thanks for the AgroMax link, one more thing on the wish list.
 
My hood has latch set and a gasket around the glass. It opens and closes for easy bulb changes. No need to tear up ducting.
No prob! Yes, you will be happy with the results.
 
$89 cool-tubes, NOT service friendly...My first ballast was a coil wound HPS and when I bought my convertible E-ballast I never thought about driving a MH bulb with it, so I got another tube fixture. oops...learning curve never ends with this hobby.
 
My first real hood was a cool tube. Lol. I still have it actually. I always tell myself I’m going to give vertical lighting a try one of these days, but never actually do.
 
Bare vertical bulbs in giant parabolic reflectors and coil wound ballasts...antiques now. I've still got that coil ballast, I bet it has 15000 hours on it and it still works fine. I could heat my garage with the thing when it's running, and it's probably a fire hazard, but it never failed. I tried to give it away a while back and no one wanted it, so back under the bench it went.
 
Haha. The umbrella hood. More fancy than my first. A warehouse HPS that my buddy obtained. Magnetic ballast and vertical bulb as well.
 
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