I'm currently having trouble trying to repressurise my boiler unfortunately, the youtube tutorials and the manual look different to mine! Mayors praise lanes response to yorkshire floods emergency. You saw the fellow who let you in at the school gates, plumber? You dilute the earth enzymes powder with warm water and pour it down the blocked sink, drain or u-bend and, all things being well, it clears the blockage. Don’t let your plumbing problem turn into a nightmare.