Hi, anyone got a top tip for cleaning out inside of a header tank. Bought second hand and just want to make it look a bit better. Currently in sink with a bit of washing powder.... Hope she not home before me!

I put a handfull of uncooked rice and half filled mine with cold water. Swished it all around and it got rid of most of the gunk.

Cheers
Stot

Ultrasonic cleaner for a day did mine a lot of good.

Coke.it cleans anything,soak it then give it a scrub then soak a bit more then rinse....i would say dish washer but you may get akick in lol

Apparently dental cleaning tablets work as well - not tried them myself though.

Biological washing powder is good.