The tiny white spots on top of the leaf look like tell tale spider mite damage spots. Without nutrient info and medium/grow info, my best guess on the brown color would be lack of water or over fertilization. Just a guess though.
The white spots are water spots. Roommate thought it was a good idea to water the top part of the plant with the same water that has nutrients. That should explain the white stuff.
The nutrients are GH Flora series, floragro 2-1-6, floramicro 5-0-1 & florabloom 0-5-4.