Len, I recently had a custom glas tank constructed for me. I'm very happy with the quality, time it took to build, and most important the price. The manufacture is located in Southern California. I can't recall the name of the manufacture off the top of my head but I ordered the tank thru a LFS in San Luis Obispo called Aquatic Adventures. The owner of the store is who I dealt with his name is Palmer Lancaster, great guy, been dealing with him for 8+ years. The tank is a pentagon, the back sides are approx 4ft in length, I used 1/2 glass and black silicon, it has a built in overflow. I paid $760 for the tank.. I was quoted upwards of $2,000 for custom oceanic. I will post more pictures of the tank tonight and figure out the name of the manufacture as well..