You can try crypts for planting in the substrate and anubia's, java ferns, and bolbitus for attaching to rocks and driftwood. With that low of light don't expect much of any growth and I suggest running lighting about 10 hours unless you begin to get algae. I do not suggest getting anacharis or hornwort and nothing that floats that would further cut down the light in the tank. Using liquid carbon daily will aid plants in utilizing the available light for photosynthesis. If you plant crypts, which there are several different kinds of varying heights you will need to put root tabs under each one periodically as they are heavy root feeders.
A lot depends on the size of the Swords, Crypts, or bulb plants. While small Swords say need 1 root tab, a large one which will need a lot more nutrients will need more root tabs and often need them used more often. Directions are a good starting point but you also need to take other factors into consideration.
Very low light, like .58 watt per gallon. Can I get stuff like hornwort, anubias, crypt, dwarf hairgrass, java fern, moss... What else can I get?
Getting the names of low light plants is definitely helpful. But, if you forget or don't have the names, next time you're at the pet store, just look for the dark green plants. Those typically require lower more subdued light.
__________________ "Fear not, my young apprentice. Just change the tank water."
That is low but its worth noting the whole "2 watts / gallon" thing is an old saying and is based off t12 fluorescents. T8 and T5 put out considerably more light per watt than t12s. And the quantity of light (although difficult to measure) is what your real focus is.
I'm growing dwarf hair grass quite nicely with ~1watt per gallon T8s that put out light in the 750 lumens range, which is red shifted. DHG is supposidly difficult to grow but its my first plant and is growing beautifully.
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