Painted turtles (
Chysemys Picta) average about 7" (straight from nuchal scute to the but, not following the curve) the general guide is 10gal per inch = 70 gal minimum tank. IMO, that tank is too small for him/her but I can't see the whole thing.
Water needed to be as deep as possible, with room for their basking ramp. UVB/basking lights are needed. heat temps should be at least 5 or 10 degrees warmer than the water. A STRONG filter overrated for the tank size. Fluval makes a good canister filter. Gravel is decorative only, not needed.
Baloney should NEVER be fed to ANY turtle, it's full of fat and salt that will eventually kill them. Water turtles should have a variety of a pellet food(like ZooMed's) AND dark green leafy veggies, live food like meal worms, earthworms, phoenix & wax worms, and even the occasional pinky. Never veggies like broccoli and the life, the stiffer ones are bad for them. Blocks calcium absorption.
Any questions, lemme know.
My qualifications

keeper for about 7 -8 years: bred and raised CA Ornate Wood turtles, kept 4 red ears, russian tortoise, boxie and currently 2 wood turtles bred, born and raised here, 1 spotted turtle and a reeves from well know breeders.