Hi Peter,
I just switched over to MH. I find the photo period quite OK for me at the moment, no new algaes ever since I start monitoring the nutrients closely.
As for the addition of new fishes, it was because my tank had only 10-15 adults cardinals, 6-7 cardinal fry (bred in tank! yea!), 8 rummy nose with a couple of yamatos, Otos etc. I felt too little crits for my tank and thus the addition. I do not have the intention of depending them for nutrients but I will try to add less N and P as I increase my bio load.
Here is a pic of my tank (still under construction)...
PS: Please ignore the unsightly cable, pipes and the 2 meshes of moss
:P
Bookmarks