I have decided to try kitty litter in a tank as an experiment. I got some that has no additives (that they'll admit to) and I realised that I don't know whether to wash it first or not. I think it makes sense to wash it to remove dust. Am i right or not ? Scotty scottyflag at enter_net Quakertown, PA "Our body has two ends, one for thinking and one for sitting. Sometimes we get our ends reversed."