I've seen quite a few sps tanks. Some have outrageous PE, some have good PE, and some have very little. What do you think encourages good PE, and does good PE really suggest a healthier colony? I love the look of polyps blowin' in the breeze, and I associate it w/ health, but my own corals have pretty weak PE. They still grow, but what gives?

a Millie with little to no pe is one of 2 thins.. Flow or aefw only factors I have ever seen with them...

