True, but those variables also include salinity (the higher, the more dense the water, thus different spectrums of light might no penetrate to certain depths), how much LR
, where the tank sits (in direct sunlight, or a dark room). The sam goes for flow, this depends on how much LR
, how it is positioned and such. I think those are generally decent guidelines. I guess the expectations should be set, that they are not written in stone and are lose guidlines, at LEAST a bare minimum or a decent average. How does that sound?