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Phillips 6500K bulbs

664 Views 1 Reply 2 Participants Last post by  houbanna
Anyone ever use Phillip[s 6500K T-8 bulbs for growing plants? If so what were your results?
I picked a box of them today, along with a few 3 bulb shop lights for my plant grow out tanks. The CRI isn't real great, but you can make a bunch of light for not much money.:biggrin:
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I run a shop light with 4 of those on a standard 55gal. With 2-3 inch substrate I've been able to grow everything I had a little trouble with hair grass filling out as fast as I wanted to but since then if been growing hc as a carpet very well so I think the hair grass slow growth was due to something else. Photo period about 6-7 hours.
 
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