The website is a little misleading I think. They say that T6 is the next generation of T5's but there are some big differences. First, these bulbs are made to fit in T8 and T12 sockets (T5 bulbs have prongs that are set much closer together). Wider spaced sockets mean fewer bulbs that can fit in a hood (one of the advantages of T5 is the ability to cram a bunch of bulbs in). They're output is variable, depending on the ballast used (a 4 ft bulb has an output of between 32-55 watts). I'm not sure, but I doubt a thicker glass translates to longer bulb life (they're claim of better durability probably means they are less likely to break). The bulb selection is very limited (daylight 5000K, full spectrum 5500K, actinic, and cool white 4100K) and does not include a 10,000K bulb which is the most popular "color" in the reef hobby. Finally, there does not appear to be
individual parabolic reflectors available (this almost doubles the light output per bulb and is what makes T5's comparable to halides).
I have to admit that the T6 fixture that you got does look good, and should work just fine. There is no "best" lighting IMO, and I am not trying to dis your lights. Anytime people talk about lighting, it's important to point out the differences.
Don't forget to give us a long term report - most of us aren't familiar with T6 and would appreciate the info.
