Can someone please give me a link or personal info as to what would be considered low to medium low lighting over a 20 gallon standard? I have tried a good amount of plants in my tanks since I've started my planted journey, but now I would really like a low maintenance tank full of rhizome plants and some lower light stems and dwarf sag. Would t8s be necessary? Could I use shop lights with cfls? Currently I run a dual bulb t5 ho oddessy fixture over the tank. I don't feel I get full light coverage over the tank with the way the reflectors are made. Any information to help me achieve my goal would be greatly appreciated. Thank you in advance.