I have had this toadstool for about 3 months now and it was open for the first month, but has been closed for the last 2 months. It seems healthy, just doesn't extend its polyps. He is in a tall 75 gallon (25"). He is presently about 20 inches away from an 8 bulb t5ho fixture with bulbs of unknown age (4 10000k and 4 actinic). All of my other corals are doing fine and prospering, including the acros that you can see up high. My parameters are 0's, including phosphates. Salinity is at 1.025 and the lights are on an 11 hour cycle with blues on at 0900 and off at 2200. The whites on at 1000 and of at 2100. The powerheads in the tank are a 1050 on the left and a 750 on the right. They are on a wavemaker, alternating every hour. My thinking is that he is too far from the light and I need to move it up, but I see some in other peoples tanks that are happy on the sand also. Please give me your ideas! I have included pics of it in the tank from different distances to give you an idea of the placement. Also a picture of what it looked like when it was open.
MY HEALTHY TOADSTOOL
AS OF TODAY, FULL BUT CLOSED UP.
LITTLE FARTHER AWAY, SEE IT TOWARD THE LEFT SIDE OF THE TANK.
AND IN THE CENTER OF THE PICTURE.