Have you had any success with Blyxa japonica and no co2? Also what type of wood is that? It's to bad you had to tear down your other tank. I really liked that one. This one looks like it will be cool too.
I have only had the blyxa in there for a week so time will tell. I have osmocote under the substrate, and the light is medium intensity, so it should be ok. Wood is just manzanita branches.
I liked my 29 gallon I tore down as well, but I really like keeping nanos instead. I would much rather have 10 4 gallon tanks than a single 40 gallon. Going with slower growing plants and no CO2 makes maintenance much easier as well.