I have a 28g reef tank with a frogspawn, hammer coral, sun coral, and a xenia frag.
Last night I made a bucked of salt walter, and let it sit overnight with a powerhead and heater.
This morning I did my weekly partial water change, and now my frogspawn and xenia are closed up (during the day).
Are they mad? Is something wrong?
I tested the water several hours after the change, and everything was normal.
Nitrates, Nitrates, Ammonia were 0
Any ideas? I'm nervous....