P pri_187 New Member Joined Mar 13, 2009 Messages 2 Reaction score 0 Apr 11, 2009 #1 Is it possible to run an external filter in an undergravel filter system?
K kevmiller New Member Joined Apr 7, 2009 Messages 21 Reaction score 0 Location Leigh, Lancs Apr 11, 2009 #2 pri_187 said: Is it possible to run an external filter in an undergravel filter system? Click to expand... yeah i can not see any reason why you can't.
pri_187 said: Is it possible to run an external filter in an undergravel filter system? Click to expand... yeah i can not see any reason why you can't.
