How are you planning to keep it at that temperature and with what fish(nutrient source)?
It will be worth a try, but when tropical plants naturally get cold temperatures it triggers a winter dormancy mode (less uptake/processing of nutrients).
Attend a hydroponic/aquaponic meeting in your area and really educate yourself to find out what plants prefer that temp range.
I am considering putting my small Meyer lemon, poinsettia and kalanchoe, which are great winter bloomers, under an aquaponic setup, but I'm still seeking some education on plant's anatomy and aqua conditions.
I have tried jasmium, anthurium, polka-dot pilea, cloves, mints, spaths, and zebrinas very successfully from 65-85F. I also currently have lavender, basil, oregano and catnip as seedlings and hope to transfer to my tanks soon. Lobelia is a trailing flowering plant, but might require high lights for flowers.
Experiment with some herbs first as they are cheap, but it's important to keep roots well aerated with an airstone, have 12hr 6500K lights above them, and a nutrient source (CO2, NPK, trace).