So I'm going to be selling my 300gal indoor aquarium, for a 300gal stock tank, and building a lean-to greenhouse(pretty sure that's an indoor pond) around it. Now, I JUST got an FX6, can I use it for the stock tank, or should it be sold with the 300 acrylic? Stock will be two smaller turtles(maybe some fish), but do you guys think this is sufficient filtration? Or will I NEED a UV filter in a greenhouse with the turtle's basking lights? I have years of experience with large tanks, and honestly only basic knowledge on outdoor ponds. Since I'm still at the beginning stages of this project, any advice, or suggestions would be AWESOME! Thanks!