A T5 reflector will not work, it is too narrow. AH Supply reflectors for bigger PC bulbs work very well. Check out my latest hood where I used a T8 bulb with AHS reflectors: http://www.plantedtank.net/forums/diy/39251-optimized-10gal-canopy.html
You can optimize the spread by adjusting the bulb position and bending the reflector wider or narrower.
Here is where you can buy those reflectors: http://ahsupply.com/mcart/index.cgi?code=3&cat=9
Not cheap at all, but a good solution if you want the most light from your T8s.
You can optimize the spread by adjusting the bulb position and bending the reflector wider or narrower.
Here is where you can buy those reflectors: http://ahsupply.com/mcart/index.cgi?code=3&cat=9
Not cheap at all, but a good solution if you want the most light from your T8s.