I am worried about my BTA. It has been doing real well, but today I came back and it was closed up and some of the tenticles are hanging out. The tenticles are still very colorfull and isn't looking pale at all. My temp is at 80 and all my levels are 0 beside my nitrates at 3 ppm. Is it eating something? Is it to much light. I have my lights on for 12 hours a day. I have 6 watts a gallon acintic. Is it dying?????? Help me please...