ok i found a bargain at doncaster market a couple of sundays back a glass tank with mesh slide out top and 3 glass shelves and an air vent 1/4 of the way up on the side:size 3x2x11/2. day 1:i took it home and strip old sealent of which meant taking shelves out and vent and left the lot over night in a the bath with diluted bleach to steralise. day 2:left it all to dry day 3:sealed tank and re-fitted 2 shelves and vent with some aqaurium sealent and left for 2 days to sealent to cure fully. day 5: wrapped cling film around sliding mesh top and hey presto a stunning home for my crb and all it cost me was £3 for tank and next day £2 for a big tube of sealent thanks to my mate who accidentley on purpose under charge me at the shop