I have been studying turtles and thier behavour for going on 20 years now. Watch your turtles at night they are more active then, day they are usually very lazy. Turtles are oportunistic feeders but tend to feed more at night. Young turtles have more greens in their diet eg. foxtail and amazon sword. Green peas are really good too. Turtles do bask naturally in their own time. I do recommend not heating water thier breeding cycle depends on the seasonal changes. Heating the water at a constant tempreture all year round has been proven to sterilize turtles which makes them useless later on for breeding. If everyone did this captive bred turtles would become non-existant within 3 years and the only ones for sale would be wild caught. My water gets down to 2-3 degrees and they go dormant and sleep on the bottom of my pond. They need this time of sleep to reset thier metabolism and do not feed during this time. AFTCRA is another site to checkout too.