On 16 May, 17:21, "The Medway Handyman" davidl...@no-spam-
blueyonder.co.uk wrote:

It makes you wonder who designs this stuff. *" I know, instead of using that
perfectly good idea thats been around for ages, lets drill holes in the
botton of the 20+ litre water cistern".

That's, "20+ litre water cistern with automatic refill"