a 6' x 24" would be just fine for the fish, although 20" wide isn't as good...should house the fish for quite some time though, especially if it's only other tankmate is the CK. of course the CK would likely need a wider tank in the future depending on its size--
--solomon
26"ish. I've never actually seen any for sale in a store, both SALs I own I ordered through work from our suppliers. Anywhere from 20 to 300+ depending on size.