I tried XM bulbs and hated them. Best rendition hands down in a Halide bulb I ever had was from a brand called Helios, which are not sold any more. I like Radiums the best, with Phoenix a close second. I prefer my spectrum a bit on the 20K side, which Radiums are.
Radium is probably the favorite halide bulb among reefers. What is best is really a matter of opinion and whatever one likes.
Try the eBay bulbs if you want. There are those that like them. I buy my Radium replacements on sale. Got my replacement Radium 400 watters just a couple weeks ago for $59 each from Hamilton Technology during their 20% off sale. Got them for $56 each from ReefGeek the year before that.
Radium is probably the favorite halide bulb among reefers. What is best is really a matter of opinion and whatever one likes.
Try the eBay bulbs if you want. There are those that like them. I buy my Radium replacements on sale. Got my replacement Radium 400 watters just a couple weeks ago for $59 each from Hamilton Technology during their 20% off sale. Got them for $56 each from ReefGeek the year before that.