I have a 36 bowfront, the fauna are mostly cherry shrimp, potentially some dwarf Cory's.
It's running a dual T5HO fixture, with bulbs that should likely be changed. And I would say it's low light, maybe towards medium if I were trying to be hopeful (may just stick an LED fixture on so it's more consistent)
But as above, cryptocoryne will work pretty easily.. if you are planning hardscape (wood, rocks etc.) Then maybe some epiphitic plants would work well (Java Fern, bucephelandra, anubias) would be good too. I am not a huge fan of swords personally... They get a bit big.. and I think stem plants are too much work.
For flourescent bulbs, the T number is the diameter of the bulbs in eighths of an inch.. so T8 is an inch across, T12 is 1.5" etc.. for what that's worth. It might not say if the writing has been worn off.
But give it a go either which way and see what happens, don't go too wild, so you don't waste too much on something that won't grow for you.
And if you want heavy root feeders, like crypts or swords, look for a substrate that has high CEC so it will hold nutrients from the water, root tabs, fish poop etc. For something easy try Safe T Zorb (or however it is written) from Tractor Supply, or other such stuff.. it's pretty magic stuff
but we want to know everything you can tell us. How old are the bulbs?
