Hi, my first post so hope someone can help and advise me
I've recently purchased a huge water container for my allotment - one of the big square ones in a metal cage that hold 1000 litres.
Before I start filling it with rain from the roof of my shed I want to make sure it is clean. There is a very small amount of a dirty liquid in the bottom and it doesn't smell of anything in particular. The chap who sold it to me (via Ebay for £30) assured me it had not contained anything poisonous or dangerous but I want to make sure.
Any suggestions as to what I can use to swill it out before collecting rain water.
Many thanks