they look good, how are the floaters working out for you, I have fluitans and duck weed and they are driving me nuts, with the AC20 they wont stay in the little pen I made them. it is easier with a canister filter? mine get pushed under by the hob and get stuck on my moss and stems.
are you injecting c02 or are you just using excel?
thanks for sharing and keep us posted on the progression. I love looking at nanos. its amazing what you can all do with these little tanks