Our tank is a 46 gallon bow-front by Aqueon. Standard hood with a full-spectrum fluorescent tube, separate heat-lamp and two submersible filter-pumps (Tetra ReptoFilter). A submerged hollow log and floating hollow log (by Zoomed) to haul-out on under the heat lamp. No glass top lid, as this would block the full-spectrum light the turtles need for proper health. The hollow logs provide more room (and different levels in the tank) to explore and hide. Floating freely in the tank I have live Anacharis plants for our pair of females to munch on, which also support the feeder fish and help balance the water chemistry. I use reverse osmosis water from the water store since the tap water in our community is very hard, full of lime scale and chlorine. The background, though hard to see it in the picture, is a mirror, cut to the same size as the back wall of the tank. This increases the "depth" when viewed from the front, and makes it look like there is twice as much of everything in the tank... fish, plants, logs and of course, turtles!
Pictured is "Slider", an adopted 11 year old male Red Eared Slider, recently rehomed to a nice family with a secure backyard pond, "Skidplate", a 35+ year old female Western Pond Turtle we've had since 1991, and "Shipwreck", a 2 1/2 year old Spotted Turtle.