Question: Can i use activated charcoal powder in my filter instead of potassium permanganate? - Charlotte Answer; Hello Charlotte,
You can absolutely use activated charcoal in place of potassium permanganate.  Activated charcoal has a much longer life span and higher imagecapacity for chemical uptake.  You can use either our 4x8 or our 48C-AW.  PP will oxidize chemicals upon its surface while activated charcoal has a extremely high internal surface area it pulls the chemicals into and traps them there.
Give us a call if you have any further questions we can assist you with.
Sincerely Charcoal House LLC Customer Support 308-665-1566