best of luck on finishing the project. If I don't get to do my 12,000 gal tank I have planned by the time my jau is 5' you can have it lol. I should be done way before then though lol. What's the price tag on all the block work, and rebar combined? Price on the glass? I want to to make my tank 4' tall. Probably be pretty huge though. Thinking of going with a square design. Not sure though might be too many dead spots in a square. I am just going to build it outside. I'd imagine the concrete insulates very well. Is the tank hard to heat? Sorry for so many questions. As always love the cats and pimas!