I have a 200 gal deep dimension and run radion / t-5 combo with great success. My 48" tank has 4 t-5's, one xr 30 pro plus 2 xr'15's pros. The 15's run together so equivalent to one xr-30. Its what i had to use from my frag tank. I have run halides, vho, t-5's, led only in the past. From my experience, the combo of 5's and led's overall is hands down the best. If it wasnt for heat and power issues, id say hallides and t'5's best for growth but that gains not worth the negatives (excessive heat, power, fans, fire risk, extra cords, changing bulbs) over the t-5 combo.