I have to respectfully disagree with reefrunner.
I was told, as you are being told now, that Iodine is not nessisary...you can just do water changes and it will take care of its self. So I tested it. I quit dosing Loguls for one month. There was a dramatic difference in my Xenia...and other corals were showing signs of "fatigue" (for lack of a better word). I dose loguls on a regular basis, but in low amounts.
As far as the pep molting...it is my understanding that crabs and shrimp molt when they are growing (among other reasons). It has been my experience that the younger the crustatian, the more often it will molt. This makes sense if you are looking at it from a "growth" stand point. When do humans grow more, young or old? Obviously when we are young we grow the most. Same here. Young peps molt more because they are growing faster and therefore need to change "skins" more often.
I will agree with Reef on one point...no need to be confused...I'm right