Hi all I have 2 zoas glued to a rock and one has 2 heads the other has 1. The stalks on the one with 2 are low and fat with it not stretching at all. But the one with 1 head is really stretching and thin and long what should I do because they are glued to the rock so the only thing I can do is turn the light up or leave it? So the question I was wondering is two things one should I turn the light up or two can I leave it or is it bad for a zoa to have to stretch?