I think that the issue here,
@Fishfinder1973 is that members and non-members alike scroll through this forum everyday. If I was new to the hobby, I might read this post (which to my knowledge does not state how long he has owned it) and say "Oh, I can keep turtles with my fish" which is certainly a recipe for disaster. See more below on this..
@Guyb93 I don't think it's a "too much time on our hands" issue, while the internet is certainly full of that. We all care for animals and can see how this is going to play out as the turtle grows. The concern is that others, who know nothing about turtles but want to know about them, would look at your post and then do the same which would be ill-advised.
With that being said I wanted you to know I appreciate that, after making the mistake of purchasing without researching, you are willing to learn and take advice from other members who have more experience. Hopefully your fish will thrive and this turtle will get moved into a habitat that better suits his nature.