when you say all levels are zero, does that include
nitrate? if so, then your tank probably isn't cycled.
to answer your question knowing the wattage on your lights will be helpful. plants are divided into three categories of low, medium, and high lighting. depending on the wattage you'll need different kinds of plants for them to grow. i'd also recommend getting flourish by seachem as a supplement if you're not going with any kind of CO2 system or anything.
if you have a low light tank, then i'd recommend java moss, java ferns, and anubias. i have all three and they're doing very well despite my complete lack of plant expertise.
as a side note, i see you have a clown loach in your 55? unfortunately the loach is going to get way too big for that tank, they get to over 12 inches long and are very deep bodied, and really need to be in groups otherwise they can stress themselves to the point of death.
http://www.loaches.com/species-index...a-macracanthus