I just got my 2 babies from a feed and supply store.. they told me they were 2 weeks old. Is there a way to know their age more accurately? Anyhow I’m in southern Louisana and it’s hot and sunny so I’m not worried about them catching any chills but are they ready to swim? I planned on installing a pond this weekend- aiming for something small. Maybe 3x5 and no more than two feet deep with a uv pump and filter. Is that too much for them at this age? Also my yard is completely fenced and I would be supervising any outdoor time.