So I was very lazy after my last batch, and just left the carboy, auto-siphon and tubing soaking in Oxyclean for about two weeks. Now the carboy has a bunch of little Oxyclean crystals stuck to the sides that I can't seem to scrub out. Also the siphon and tubing are either etched or have a heavy residue that I can't scrub off either. Does anyone have any ideas about how to clean this stuff off? Is it safe as is, or did I just ruin my gear?