Both of my 55gal. tanks are low-tech. About 1.5 WPG;no Co2; and I use Seachem Flourish per mfg.dosing. Now, my plants arent growing out of the tank,but they are lookin good(especially since I got bck to weekly water changes!!) I have swords, dwarf rotalla java moss, some hygros, and a couple anubius nana,and a bunch of crypts-and they al look gerat!!