Quote:
Originally Posted by Phil highlander
read into charcoal !! be very carefull as when it gets to its absorbant capacity it has a tendency to release all that it has extracted !! causing sudden poisoning to fish and all microscopic aquatic life
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yes you are right Phill follow instuctions on the pack and change it every time you clean fillter for new charcoal, or you could run into trouble, in long term,