Do you think the type of light is what makes ric shrink?
I have LED on mine and they are shrinking by the day, ready to drag out my power compacts very soon.
I have even backed off on the amount of light they get, my tank is a 2 gal pico with only florida ricordeas in it and my LED full strength is 9 watts right now I have 3 watts on them and even have that shaded and they are not open and nice at all. I truly believe this light is to blame.