I got out and cut the barrels in half yesterday. Then today I washed the insides of them. At first I thought it would be harder than it was. The rusty looking stains that were on the inside and tops of the barrels actually came off very easily. Just used the dish soap and scrub brush that I used on the pickle barrels. That got most of it and then detailed with Mr. Clean errasers, and it turned out pretty good.
That would be me………..
Just an old broken Paratrooper who is learning Aquaponics as I go............