Ascidians should never be exposed to air..exposed to light is all dependant on the type. "Most" prefer low lit shady area's with real good flow..
If you think that you dont have any of these in your tank, think again...Your live rock will be full of them, either very well camouflaged (which is what they are excellent at) or inside your live rock..
Niko
If you think that you dont have any of these in your tank, think again...Your live rock will be full of them, either very well camouflaged (which is what they are excellent at) or inside your live rock..
Niko