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Should I mix T8 bulb temps

Posted by Michael.Masztal none (My Page) on
Thu, Jan 31, 13 at 8:52

I purchased a 4 bulb, all 6500K in a T8 fixture to use over my DWC lettuce bins. I am growing organic Butterhead, Mesclun and a variety called "Salad Bowl". All are doing well except for one variety whose leaves seem to grow in a node form almost spindly. Would it be advisable to have at least one ~3000K bulb in the fixture?


Follow-Up Postings:

RE: Should I mix T8 bulb temps

your lamp in all likelihood, is a "triphosphor" means that inside the lamp is a little bit of mercury that emits u.v. - the u.v. strikes the phosphor on the side of the lamp, and visible light is re-emitted. the tri part of it means there are three different phorphors, one blue, one red, and one yellow/green so your lamp will emit light in a line spectrum with all three components. All high quality modern fluorescent is like this - the spectrum output shows three spikes, and your lamp, even though 6500k, still will have a red spike in it, so don't worry, you are fine.

RE: Should I mix T8 bulb temps

Thanks, overdrive. It just may be that that form of lettuce grows in that fashion.

RE: Should I mix T8 bulb temps

I have grown mixed lettuces and many different . If your musclun mix includes endive or watercress--not typically lettuce but often included with them--they will grow in that spindly way. Oriental lettuce will also not have those big leaves that we associate with lettuce.

I don't think your lights are to blame. I think it's the seed that's growing like it is meant to. I wouldn't change a thing about you lights

RE: Should I mix T8 bulb temps

Thanks, dow.

RE: Should I mix T8 bulb temps

  • Posted by carb none (My Page) on
    Mon, Apr 22, 13 at 6:39

Hello over drive, can you post some pics of your lettuce please?

RE: Should I mix T8 bulb temps

i don't have any lettuce but i will take some pics of my tomatoes - i will do that in a few days - need to take pics for horticultural society meeting as well - thanks - pm.

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