if those plants are real, then this discussion has a point.
if the plants are fake, the tank has absolutely no need for light what-so-ever... except for your viewing pleasure... and should be off whenever you're not actively viewing the tank... unless you prefer a sea of green to visible fish.
so if the plants are fake, what it looks like to you when the lights are on is the only deciding factor on whether they're sufficient or not. if you think it's too dim... get something brighter to the eye.
if the plants are fake, the tank has absolutely no need for light what-so-ever... except for your viewing pleasure... and should be off whenever you're not actively viewing the tank... unless you prefer a sea of green to visible fish.
so if the plants are fake, what it looks like to you when the lights are on is the only deciding factor on whether they're sufficient or not. if you think it's too dim... get something brighter to the eye.