One of the things that drew me to the kabuki tank was the glass tanks were cheap and easy to find plus they offer a solid metal tank. So i have backup glass tanks and a backup solid metal tank. If there ever is a back order or i forget to order glass replacements i always have my solid metal tank to fall back on. Now i hate solid metal tanks because it drives me bonkers not being able to see the liquid...but having one as a backup will ensure i never am without a tank in a worse case scenario.