Aqua Man
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Depending in exposure time.... sure they will do if you wanna run them for the entire light cycle.Sorry a phillips cmh 315 3100k bulb puts out enough for the thc bump shown in many tests and the 4000k has even more.
Dont listen to the uv bulb sellers. 15% is much higher then needed. 2-3% uvb will do it.
Also not true they provide no UVBDepending in exposure time.... sure they will do if you wanna run them for the entire light cycle.
Thanks, I always wear glasses in my rooms but not always long sleeve shirts maybe I should start lolHonestly none of the HID put out a significant amount. I know this goes against the belief MH and CMH do but in fact they do not. Also any glass will filter UV.
Depending in exposure time.... sure they will do if you wanna run them for the entire light cycle.
Also not true they provide no UVB
I should clarify that CMH does put out a small amount of UVA but no UVB and should not affect thc but correction @MIMedGrower may slightly increase resin production but not compared to the addition of UVB. So I'm saying comparatively speaking it does not mean you would not benefit from the addition of UVB
Cheapest single 4 ft. fixture I found was on Amazon for $32.......... I believe 1 bulb should cover a 4 x 4 ft. area.
Sun Blaze HGC960320 T5 High Output Fluorescent 41-120 Volt-Indoor Grow Light for Hydroponic & Greenhouse Use-UL Listed, 4 ft. Fixture, 1 Lamp, 120V, Silver
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They have 0 UVB. Maybe I misunderstood? You implied they had 2-3% UVB?Of course they are run the whole cycle. They are primary lights with the proper sunlight like spectrum. And they fall in between hps and led for efficiency.
I should clarify that CMH does put out a small amount of UVA but no UVB and should not affect thc but correction @MIMedGrower may slightly increase resin production but not compared to the addition of UVB. So I'm saying comparatively speaking it does not mean you would not benefit from the addition of UVB
Keep in mind these things are very strange units, there not standard 4 foot fluorescent bulbs, there a "special" configuration. I tried to put them in my fluorescent sockets in my kitchen, and they DO NOT fit, it's a different socket, and there like an inch shorter than a standard (4 foot) fluorescent lighting unit, also the pins are a bit different, I think closer together.NOT LED's, we're talking about the 4 ft. bulbs.............actually there like 3 3/4 ft.
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They have 0 UVB. Maybe I misunderstood? You implied they had 2-3% UVB?
Keep in mind these things are very strange units, there not standard 4 foot fluorescent bulbs, there a "special" configuration. I tried to put them in my fluorescent sockets in my kitchen, and they DO NOT fit, it's a different socket, and there like an inch shorter than a standard (4 foot) fluorescent lighting unit, also the pins are a bit different, I think closer together.
Nope they have no measurable amount of UVB.. definitely not any significant amount to affect the grow.even old metal halide had some uvb. Usually blocked by an outer glass jacket or fixture glass. But cmh has more and phillips uses special glass to let more through.
i am really sorry i cant find the university spectrum report. It had all hid and older led too. Cycloptocs green beams lighting had the info on their web site but they are gone now i just searched.
Oops ok ill find it.They tested phillips not hortilux. I have phillips bulbs.
Nope they have no measurable amount of UVB.. definitely not any significant amount to affect the grow.
Yes that shows absolutely 0 UVBHere is an old growers house comparison test. Shows uv on every brand. Hortilux did not make one yet
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