-I have had a res for a little bit under a year. I got it when it was a baby from a sketchy store in the mall that by no means was a pet store. A lot of the turtles there had eye infections and were kept in little unheated goldfish cages. I actually had to return one because of that problem and they gave me this one in exchange. I was debating not taking it because I realized how much work it was going to be and I was scared to lose another turtle. My gf really felt bad about the previous turtle(and the countless others that had the same problem) so we took this one home. Since I brought it home I have had this turtle in a 20 gallon tank with a heater, filter, basking light, uvb 5.0 straight tube, and turtle dock. The bottom of the tank has a few rocks that are probably the same size as the turtle. The turtle is about maybe 3 inches at the most, probably closer to 2. I am assuming it is still under a year old, and I am not sure whether a boy or girl. The water is always about 80 degrees and the basking temps are also about 80 degrees right now because in the winter my house is a little bit cold. She basks a lot during the day. She is active and appears healthy.
Shell Problem
-Starting some time last summer her shell started browning. It was gradual but now almost her entire shell is brown. I have tried dry docking, and cleaning her with a toothbrush and hibiclense. Does not seem to have any effect. Her shell is not fuzy or soft. Looks mostly like the schutes have dried out and never shed. I assume she just needs to get a good shed to get rid of the browned schutes. Any suggestions?
Diet Problem
-She used to eat pellets like crazy, and would enjoy occasional fruit, vegetables, and shrimp. When the winter first started she seemed to stop eating, and after a few weeks I didn't know what to do. I realized she would eat the shrimp treats, but that's all. I tried only giving her pellets for a week to see if she would give up and eat them but she did not, and I keep a cuddle bone in the tank which she only occasionally will bite. I put lettuce in sometimes but she never goes near vegetables. SO right now her diet is only shrimp....
Should I see a vet? I am looking for one in the area but having trouble finding one, and I am also kind of broke cause i am a college student but I am not against going to a vet if it is necessary. The turtles health is my main concern. I am currently setting up a 55 gallon tank to move her to. I am excited about giving her some more space and a new home to explore, but I want to take care of her problems before I commit her to the new home. I have a cascade 1000 canister filter on the way, I am going to buy a new uvb bulb soon, I have a larger basking platform on the way, I have some big rock formations being disinfected, and I have been thinking about getting a pleco or two to keep the tank clean. Any suggestions for the new setup would also be appreciated but not neccessary.

