The cost of a 240g Aquarium, then the service of a glass shop to cut the 1/2" glass, 2 kits of Pond Armor, fiberglass, 1" plywood, steel angle and 10-11 tubes of silicone. Wasn't cheap, but was cheaper than the cost of a similar sized tank from Glasscages. I want to keep it and put some Peacock Bass and Tiger Shovelnose in it, but wife is dropping the hammer.