Hello! My first post so excuse if this is a daft question! Is it a good idea to add a solar powered fountain or oxygenator to an outdoor pond that has been home to an aged red eared terrapin for a couple of years? There are goldfish, tench and lots of plants. A basking deck and stroll area. All within wired frame. But with the recent 34 degs heat I noticed the fish gulping air. Im worried the addition of a small (but maybe noisy? Ive no experience of them) pump will disturb the terrapin who is pretty happy... or will it improve the conditions for her too? Any suggestions welcomed! T.I.A.