The color of the water I'm taking out during water changes tells me I'm suffering a bit on water clarity but not enough to worry when I look at the tank. I have run Rox in the past and still have quit a bit but quit using as I'm not sure if continued use would strip too much from the water or not. I have a heavily stocked LPS tank (coral wise not fish)
As usual in this hobby one persons results varies to everyone else but I haven't seen any negative effects since I quit using carbon.
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