Well I finally got my Super Actinic R bulbs. I have 6ea. 4', 40W bulbs total. I was going to order the 75W 24" bulbs until I priced the VOH fixtures. Absolutely ridiculous. I'm running 4 of the SA bulbs with a 400W MH. I plan on adding the other two when the clones take more space.
The light from these bulbs is pretty cool. After you've worked around them for a little while, everything looks yellow when you return to regular lighting.
I've been pretty stoked about these bulbs since I saw that SPD chart.
Is there a timing issue for addressing Chlorophyll-a/b, phycoerythrin, and phycocianin?
That's to say, would a bulb like the Super Actinic R which sits right between 420/450nm (chlorophyll-a&b and B-Carotene)
and a bulb like the Hortilux HPS that has an excellent punch at 560nm (phycoerythrin)
be better to run together throughout an entire grow? Obviously addressing 620nm would be something you would want to do.
Quote:
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The spectral power distributions provided by many manufacturers may have been produced using 10 nanometre increments or more on their spectroradiometer. The result is what would seem to be a smoother (fuller spectrum) power distribution than the lamp actually has
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This must be a victim of what your talking about. I'm not familiar with this bulb.
I have the bulbs I mentioned above. I'm looking into picking up a warm MH. Should a bulb that has good energy @ the 620nm area be what I'm looking for? Then run them all?