Hi Marie,
The old saying if it "aint broke dont fix it" strongly comes in to play here.
If you are happy with the tank as it is then do not change anything, but if you want to start some interesting food regimes for better colouration or other advances then these level would need to come down.
But the important thing is for you to do what you feel is right for your tank, we as outsiders can only advise, and still flick back to the first photos and admire at your great achievements
