u/Beginning-Fly-1603

I was trying to make CuSo4 with MgSo4 • 7H2O and the solution did turn blue from the copper ions and was a little acidic but some point the positive electrode was starting to look alittle like anodized titanium you can se that on the part of electrode that is above solution but after more time the part of the copper electrode that is still in the water turned white/yellow mostly yellow I don’t know why