Your'e talking to the wrong person here
I have several 54 ish litre tanks in the standard 600l x 300w x 300h config.
One has two 15w fluro tubes, one grolux and one Philips Aquasky 6500k
This tank grows Ambulia and Java fern quite well - this setup is quite old and needs a revamp
I have two tanks that have single 18w Philips 865 cool daylight tube over them, one has a massive wad of Java moss and a few Java fern floating around in it, and Riccia on the top, which is not exactly flourishing, but it is not dying either. The other is a Hillstream Loach biotope with several varieties of Crypt growing quiet well in it.
The last tank has two 36w 6500k PL lamps - I have just reset this tank up after turfing out most of the guppies, Riccia and Rotala rotundifolia that were growing rampantly in there.
The following are growing well - Microsorum pteropus 'Windelov', Microsorum pteropus 'Narrow', Heteranthera zosteraefolia, Hygrophila polysperma 'Rosanervig', Riccia fluitans (which I could not get out of the tank, and it is stuck on everything and growing little rosettes everywhere), Echinodorus leopard and an Aponogeton that I thought had perished a year ago, but has sprouted out of the substrate (Dalton's propogating sand).
Nutrafin Co2 system and dose with Flourish - haven't quite got the rate correct yet, and it has a bit of green hair algae on the java moss.
Don't ask for a pic - there is too much BBA that I am trying to get rid of from the previous setup...