Hiya Ade yes mate £1-2 ish but no more ......... ill put some pics up but seriouslly it was easy to do i helped him.......... a £13 emersion element ,hole in tank seal it all round..........high heat cable , plug it in wow warm water,warm hose,soft brushes work quicker,faster and with less hazard that using cold like before..
blue frog it was so simple all he did really was get it and wire it up i drilled hole in tank sealed it up after inserted easy to do really really easy ..simple but so effective