I need to give this piece a try , how much Par is it under and do you give it a lot of flow?Thanks. This is just one branch off of a decent sized colony. It seems to be pretty hardy. I'm a little lose with my parameters, but generally run my alk at 7-8, cal at 450, Mag at 1350, PO4 is usually close to 0, nitrates < 5. All LED for the last few years, but just added T5 a couple of days ago.