I bought a piece last week, let it soak for a few days changing the discoloured water regularly. Impatient me put it in the tank a bit too soon and of course the waters turned a pale yellow. It looks alright actually, a proper amazon set up! I do 2 x 30% partials a week. How long do you reckon before i'll get my clear water back? Is there anything i can put in to speed the process up?