I figure It's time for an update on this monster build.
10'Lx6'Wx6'D

Here is 2 views of the back of the tank showing the plumbing. Drains are 4" pvc


This view is of the basking area. I provided 2 sand boxes since I will have 5 females eventually in this tank. Also have a market for the turtles and a planned grow out tank for hatchlings. The platform under the basking platform is 6" below water level giving a shallow area for turtles to rest on and still be able to breathe.

as stated before I will be running a drip system on this tank to eliminate the need for water changes. The excess water will flow to the small barrel on the side where a sump pump will pump it to a drain line that runs directly over the room this will be in. There is also a cold water supply I can tap in to so I can run my drip system. I will be sealing the room off with plastic and using programmable fans to carry humid air outside and draw dry air in from the house. The challenges I've had to face on the design of this tank are complicated. Mostly what material will hold this much water without going over my $3500 budget for this project. As it stands I'm still under budget since I'll be doing all work myself.