They cant be run in air cooled hoods. I thought about the combined but their foot print is so small unless you move your plants around (I can't I grow rdwc) they are useless.
False once again
PLESSE stop posting things that are not true. I run 7x 315 ALL in ac hoods. As well as many many many growers over at IC. Where I got my start with cmh bulbs.
T9 are single jacket made for ac hoods.
T12 are double jacket, made for open hoods.
I may have the t9 and t12 nunbers backwards.
I have 7 CMH lights. That is my test tent with 2 315's. I did all my CMH testing with a Sun Systems 630 in that tent. Plants turned out fantastic. I get about 10 days faster flowering time. I use less power, Cooling the room is easier. I'm not seeing any noticeable diminished yield returns. Everything I ran was 630w vs 1kw hps. The tent ran much hotter with the 1kw hps. Plants are much happier under CMH in my garden.. If any cant get the results they like they should move on. I have read some are not happy with there CMH results. I can't say the same.
The best part of these light is the spectrum. It is the closest to the sun. I personally don't know,if i agree with the shortening of flower cycle. Flowering time is genetics. But if that same plant has a quicker flower out doors I would expect these lights to be around the same time. I find in harder to believe when manufactures of light make these types of claims.
My room is abot 24x18. In that room I have a mix of mh and hps all in sealed air cooled hoods. This room has a 2 ton a/c. I am able to fully control my environment. To replace my 12 600w bulbs I would need about 18 open cmh bulbs. That same 2 ton a/c I don't think will be able to cool that room. Yeah I could put these ($400 lights ) in air cooled hood at an added cost. It also takes away from the light by doing this. Not only will these highly efficient light in air cooled hoods cost more they are now even less efficient. So in this room I could upgrade to air cooled cmh for around $11k. I think I'm over stating but let's say they save me $500 a month on electricity. And it will save me a bulb change so that $600 for a year. It would take 21 month for that return. That's not worth it Every 6 months to a yeah something new is popping out plus the political eviornment is heating up against cannabis. I think I will stick to my current setup the I know what I can expect from it. Now if I was starting out and building a room I would consider these
These are great lights but not a game changer like some make it seem. If it was a game changer it would make a lot more sense to replace my current setup with them
I'm telling you manufactures are making the same claim. And am very wary of that claim no matter who it comes from. If it's fast soon that's always a good claim. I would rather a bud that packed on more in the extra time.
This is a result of improving the spectrum spread ( and photoactive power a.k.a. DLI during the light period reference: https://en.wikipedia.org/wiki/Daily_light_integral ) and improving the missing or weak wavelengths produced by HPS lamp technology. Review the spectrum charts for the bulbs used and (mentally) overlay them.I have been noticing about 10 days sooner finish across all my strains now too. Even just adding the cmh to hps.
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