Hello Thomas, You wrote (and changed my name): > Hi Wilfried and all, > > adding iron (which is quite naturel in some habitats) seems to me nearly like > using peat to enhance water quality. But there is a difference: peat is for > health, iron is for good looking. Where is that line ? > > Thomas we didn't talk about peat. Anyway, sometime it is surely recommended to add something. Also iron ;-) , why not?! I didn't talk against additives, I talked against artificial colors. Okay, and against artificial fishes. Is this ok? Can we live with this? Wilfred ************************** Wilfred Teiser - Germany phoenix1@t-online.de **************************