WRONG. Mothers Milk is so dark to begin with. It just gets darker. 60mls?.oooookaaaaayyyyy....The problem I have with your statement is that you dismiss all tanks as sludge makers. I've vaped about 60 ml of Mother's Milk through my last Orchid build and It tasted the same as day one. I opened it up yesterday just to look at it and had zero gunk and never any discoloration. Either your tank or your builds suck. I don't much care which it is, you pick one.