I just bought a new LTA yesterday..VERY slight bleaching on the tips, it seems to be a shade of green which is really popping under my antics....and he isnt attaching to anything. I have him on the sandbed with moderate flow passing over him...to keep him from blowing around I put a plastic container over him with holes/slots cut in it...My last LTA I had attached to the bottom of the tank almost right away....should I just take the plastic container off and let him blow all around the tank or what?