Always been a fan of metal halides. My first setup consisted of the standard 5K bulbs. I remember when 6.5K daylight bulbs came out. Then the German 10K's were the newest thing.

But, I bought a 4-bulb tek fixture a few years back, because I didn't want the heat of a halide on my 2nd tank. What's the main thing I like about this type of lighting? You can customize the overall color of a t5 fixture much easier than halides.

Recently, I bought 2 - pure actinics and 2 - 50/50 actinic whites. Thought it was a little too yellow for the tank, so I replaced one of the 50/50 with a 15K 75/25 bulb to add a little more blue to the overall spectrum. I can only imigine the combo's you could do with a 6 or 8 bulb fixture.

What do y'all like about t5 setups?