The biological effect of the rock and the fauna are not light dependant whatsoever. NO
lighting would work out just fine. The livesand activator is just a few lbs of LS
that comes loaded with pods
and worms. There are a few good ones out of the many suppliers available. http://ipsf.com/
might be something to look into.
, if you can even supply about 2w/gal
, you can even get a healthy amount of coralline growing. It will help if it's got some true actinic lighting.