I've searched everywhere and can't seem to find the answer to this one simple question. What location is best for trumpets? I have 3 trumpets and have moved them from the top of the tank (closer to lights) to the bottom, to the middle (more air flow); nothing seems to work; they don't get better or worse, just haven't changed/blossomed or grown in months. Am I missing something? (Our tank is a 55g tank; nano set-up) etc. nothing fancy, but it's growing, slow but sure.