I've currently got pothos, sweet potato vine, vinca vine, and another plant my wife picked up for the flower box outside red and green speckeled leaves growing out the top of my sump. I put them in net pots with aquaponics grow medium so its inert ,or in the shower caddies you can get from wally world that use suction cups to hold on to the shower walls. I've also used some pieces of wire to loop through the pots to hold them on the tank edge. I used standard home wiring wire and left the rubber coating on so the copper isnt in the water. Peace lily works well too as do quite a lot of plants actually. I agree you will need a light.