In my option You have great little aqua.What more we can create IN flat !?
What kind of filter You have on it ?
Im waiting for my nano tank Eheim Liberty 130/till 570Lph(150gph)filter.
I find a place for second aqua ...under 400L/100g tank.There is 'pocket' for 10gallon'er.
We together with NBINC (highest rated tank owner) waiting for a Easy-Life fertilizers from Deutshland aquaristikshop.
I hope to create tank as Yours,without co2 but with 4x8W powerfull bio filtering and fertilizers as Easy-Life ProFito.
Juris from Riga Latvia EU (thanks God no more red USSR)