right bought an external filter and it has 2 nets of activated charcoal in one of the trays in the filter.i got told to wash the charcoal clean before i use it.well i have been doing it for about 20 mins so far and is still rinsing out black.do i need the charcoal in the filter or can i swap the charcoal to have another row of bio balls etc???as was also told thats the charcoal is pretty pointless nowadays.
cheers for any replies
chubbs
cheers for any replies
chubbs