Can anyone out there,that has PDs that are really purple, suggest tank placement for these palys? I just got a single polyp frag (few days ago), and it has only a hint of purple. I'd like to know if there are any suggestions as what I can do to get the purple back on this paly. It is currently on the bottom of my tank. I am using 150w MH and (2) 24watt t5 actinic.