Ime, i have never seen a reef safe urchin. They knock to much around. That unit is solid. I was looking for a 6 bulb by aquaticlife. Being honest, if you want clams you'll want more than 4 bulbs. And from all the research ive done in the last month it is more cost effective to get leds. Mr x got some units for 150 bucks off ebay. Some chinese knock off. No bells or whistles just on and off. They are treating his sps
corals great. If he gives them his seal of approval then that is close to the word of god to me. I personally will be spending much more on my leds for the bells and whistles, only because how im set up i require them.