I was just given a very huge carpet anenome a couple of days ago. It is my understanding that the original owner had some really good pc lights, it did very well for him for about 6 months then started to look unhappy so he gave it to someone who had VHO (I believe it was icecap 660 watts) he kept it about 8 months and again it started to look unhappy, so now it is in my 90 gallon under 400 watt MH lights we will see but he looks beautiful and is starting to look very happy.