If the par values are true on the manufacturers website, this should grow any plant. Might have a small amount of trouble getting some stuff to fully carpet, but maybe not.
Well this is what I'm shooting for in my 7.5
Dwarf Hair Grass (Eleocharis parvula)
Java Moss (Taxiphyllum barbieri)
Narrowleaf Java Fern (Microsorum pteropus Narrow)
Stargrass (Heteranthera zosterifolia)
The DHG will hopefully carpet... but I hope that light will be enough to do so, though I might have to add DIY Co2 or something to help grow these... not sure.