I just got home, and my derasa clam is gaping. It wasn't like this the past couple of days, but yesterday I noticed it was getting a little bit more brown. It was only about half open (in the cavity, not the shell) for the past couple days. I figured it was adapting to the light, as it might have not been as much as it was used to. The mantle has been fully open. It's still reacting well to shadows. I have 117w of 10k, and 117w of blue actinics. It's on the sand next to a rock, as I've heard they liked to be placed like that. I turned off the phosphate reactor last night and forgot to turn it back on, so it was off for a little while. Should I do anything?