Join Date: Jul 2010
Location: Outside Philadelphia, PA
I would think the T5 grow lux is the spectrum as the T12. I can't prove it because I've never tried the T5 version.
Yes, they look very purple and dim, but there is a lot of red in there too. Note how they really show off the red colors in fish.
I found that I got poor results under grow lux lighting, even when I used multiple bulbs. Once I replace them with full spectrum bulbs I got much better results.. Granted this was with T12 bulbs and a very long time ago.
I'd say that if you were going to pair it with a 10000K bulb, you'd be fine. At that point your more or less fine tuning the light for what you like. One of the nice things is that the bulbs are not that expensive, so if you don't like it, they are easy enough to replace.