Not to be a stick in the mud but why did you decide to paint the back and sides of your tank? The reason I ask is that i'm concerned about how you will maintain the tank. I didn't see a front panel in the wall above the tank which means you have to do it from the rear. From experience, 5 years to be exact, I have a tank built into the wall and if you do not have a removable back or sides that you can see through your life is going to be miserable when trying to clean or maintain the tank. I hope you have thought this through and I just missed something in reviewing the thread. Good Luck with everything and again, I apologize for the negative thought.