I found these steel 200L drums on gumtree
http://www.gumtree.com.au/s-view-details.html?adId=1102714328
Am told they previously held orange juice or lemon juice.
He says they are good grade and painted on the inside, when I said I was looking for fermenters he said perhaps he could get some unpainted ones in a few days.
What's everyone's thoughts on using steel drums for fermentation if they are good grade and had been designed to hold lemon juice?
Other option he has is plastic drums that held ammonia, can these be cleaned enough to be safe?