I just started making test on the electrorefining of gold and noticed something I simply cannot explain. I use 1 quart of HAuCl4 as the electrolite, made from aqua regia boiled and dilluted with water and about 10-15% HCL. The electrolite have a 35g/L concentration. I run the cell at about 2.5v at 1.5-2 amp. Yesterday I started the device and the anode started bubling prety strongly and it produced strong AR smell as well. I switched it off after a few hour of work then I came back this morining and turned the power on, this time there was no noticable action at the anode. Can anyone explain why it strongly bubbled yesterday and absolutly nothing this morning? Does that mean the anode ain't disolving and I am currently depleating my electrolite?