Check out a gold maxima, too- They require a bit less light. They don't like to be moved all that much, particularly when they get a bit larger. Derasas are the hardiest, and more colorful usually than squamosas. Check out my gallery for pics of mine! (I'm not so great at the linking thing) I use 220w of VHO (110w of 10k and 110w of 50/50) + 40w NO. (actinic) on a 55g and they've bee doing great.