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08-31-2011, 07:05 PM
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Join Date: Jun 2011
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Location: Nebraska, USA
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Thanks for explaining that Ray. I thought I was missing something there. Now to replace those 3000k tubes with something that actually promotes plant growth. 
Matt |
09-01-2011, 09:20 AM
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Location: Oak Island NC
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Well.... I AM a discount Hydrofarm reseller, so if you look at their catalog or website, I can offer pretty much anything at 10-15% below their suggested retail.
OK. Last post for a few days. Off to SW VA to do some smallmouth fishing.
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09-08-2011, 05:23 AM
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Please don't forget the color rendition index (CRI). Those differ VASTLY between different bulbs of the same nominal color temperature. The highest values I have found for T5s is CRI of 90 with Giesemann Polychromes (I think those are 6000K). Regular Cool white has about a CRI of 60.
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09-08-2011, 06:22 AM
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uh huh when I 1st heard blue light for orchids I got one of them blue painted party lights and put it in my lamp...ohhh I have come a long way..Now I use 2 of them
__________________
O.C.D. "Orchid Collecting Dysfunction"
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Post Thanks / Like - 2 Likes
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09-10-2011, 11:55 PM
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Quote:
Originally Posted by tropterrarium
Please don't forget the color rendition index (CRI). Those differ VASTLY between different bulbs of the same nominal color temperature. The highest values I have found for T5s is CRI of 90 with Giesemann Polychromes (I think those are 6000K). Regular Cool white has about a CRI of 60.
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Incandescent bulbs have a CRI of 100. |
09-11-2011, 12:05 AM
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I use the "daylight" bulbs
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09-11-2011, 09:24 AM
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Same here. I use the daylight bulbs you can find at Home Depot or Lowes, but you've still got to watch for the color temperature as not all are made the same.
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09-11-2011, 02:48 PM
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I have a curio cabinet turned grow area. I have Phal's, violets, and some hybrid Orchid ( which has gotten moved to the outside room as it's too tall in bloom for the cabinet). I don't even bother with "grow lights" anymore. Just get a soft white florescent bulb and a bright white bulb. Mount them next to each other and you get the whole spectrum...I have had a lot of success with this set up and I use $10 florescent fixture's from Meijer (grocery store in Michigan)..I've had this for two years, as the orchid's flower, I just move the shelf a little farther away.
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09-11-2011, 07:03 PM
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Please tell me more about (CRI) tropterrarium. Thanks.
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09-11-2011, 07:20 PM
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Join Date: Jun 2011
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To be more specific, is a cri. of 78 acceptable for orchid growth and flowering. Thanks
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