D Dane.w Fish Fanatic Joined Jan 12, 2020 Messages 88 Reaction score 6 Location Sunderland Jun 27, 2020 #1 I have a 40 gallon in the tank filter and for the bacteria to grow does the old media need to be in contact with the new media
I have a 40 gallon in the tank filter and for the bacteria to grow does the old media need to be in contact with the new media
Colin_T Fish Guru Joined Jan 26, 2008 Messages 41,466 Reaction score 25,765 Location Perth, WA Jun 28, 2020 #2 yes
