A few weeks back I decided to ditch my Direct port Nitrogen 'push' system & go back to a simple single fogger . I hate having switches that do nowt so got a new panel made it has arrived from Germany & been wired.
I have had a BOC bottle of Nitogen for 10 years & it cost £113 a year just to have the bottle in my garage. Must admit I had forgotten about this so today its been returned . Id just paid a years rent & was surprised that I get a pro rata rebate.