I've got the 38gallon tank (36x12x17) ...well, at least that is what he sells it as... it is really a 30 long... the front is nice with the curved corners, the back is a little sloppy - there are just 2 plastic strips glued in place on the outside to hide the seams... althoguh you don't really notice it if you spraypaint the back of it black... as far as the actual seams and all, it is pretty sloppy looking epoxy or something in the bottom, and at the back corners it is a little cleaner looking. I cut out the huge black center brace on mine because it was blocking my moonlight... without it the tank bowed out about 1/4" which from what i read is acceptable, but i ran some stainless steel cables from front to back to act as a brace... Also seems to scratch really easily compared to my other acrylic tank - an eclipse 12... Overall a decent tank, and it seems solid enough that i'm not worried about it failing, just a little sloppy looking without sand covering the bottom... and that center brace really sucks.....