I'm sure the plants have grown a little already!

if the HC is going to do well then i think i'd rather see a larger carpet of it.
maybe the money would be better spent on a planted substrate for the roma 90, and a DIY FE CO2 (again) Im thinking i might go buy another couple of pots of HC in the week and check out the bigger nano's, this one is ok, but its so small it feels kinda pointlessif the HC is going to do well then i think i'd rather see a larger carpet of it.