its a 380watt MH/CF combo unit....250 watt DE MH bulb with 2 65watt CF....the sun coral though IS NOT dependent on light though....so it doesnt really matter what kind of lights you have....if you have higher powered lights put it towards the bottom of your tank, preferably under an over hang of rock...if you have low power lights you can put them most any where. They do have to be hand fed about every other day, they do not like areas of extremely high flow but do like some moderate indirect flow. Anything else you need to know about them?