I get a musty "live" smell sometimes. I use Dutch Master Zone in the reservoir to reduce water quality issues. Maybe change your reservoir and wipe down the inside walls.Im not sure how big of a problem this is going to be but my room smells kinda funny. now when i get close to the plants it smells absolutely wonderful, like fruity pebbles haha but if im away from them there is kind of a wierd smell that i cannot put my finger on. at first i thought it could be mold, cuz it smells really thick and different. it feels a little too humid in there but my therm says its around 50 but i dont think that could be right. but if anybody knows what kind of smell im talking about or have any info for me id really appreciate it. all the plants are looking good and i dont see any mold on them, jus tons of chrystals forming everywhere haha but i want to be sure nothing happens to fuck this up.