Hi, I have a Texas Spiny Softshell turtle. I got it about two weeks ago. She is in a 45 gallon aquarium with accessories; 100 watt basking bulb, 10.0 UBV bulb, x-large basking platform, twin 350 magnum filtration, 200 watt heater, polished 3/8" gravel. I keep the temp at 78 deg, and ph around 6.8. She is about 5-6 inches across, so i think a year or two old. She has light wrinkles around her back bone and half inch from the edge of the shell. Is this normal?