ekvh » Thu Apr 07, 2016 8:16 am[/url]":14n445zo]
I bought some citric acid crystals from home brew beer/wine store. Also available on Amazon. I think I used 2kg of crystals mixed with five gallons of water, distilled is better. About $11. I still have the solution in a five gallon plastic bucket and still use to remove/clean rusty chrome or steel. It took more than seven days for my 77 tank and an 1100 tank. Every three days, I drained it, filled it with 3-5 pounds of 1/4" nuts and shook it. The second tank, I wrapped the tank in an old blanket, put it in the dryer, put more blankets around it to make it snug, and let it roll.
If you use it for other parts, I found it will wreck chrome plated aluminum. Here is before and after of a twilight bracket.
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