I have just 2 False Percs in my mostly reef tank. I run a wavemaker during the day, but turn it off at night. At night, there is a Powerhead churning the surface, a fluval which runs GAC
, skimmer and a HOB
refugium running a RIO 800.
So even though the wavemaker is off, there's still a healthy current, although not as high as during the day.
At night, the two clowns seem to gravitate to a front corner of the tank where they pair up, and swim slowly together. I've read that clowns sleep, but these two never seem to have the opportunity because of the current.
Is this a problem?