M mak Fish Fanatic Joined Apr 11, 2013 Messages 68 Reaction score 0 Location Suffolk Jul 14, 2013 #1 Can I use my old 60 litre air pump in my new 180 litre tank? I only want small air bubbles.
Blondielovesfish Kia Ora Joined Jan 6, 2013 Messages 2,786 Reaction score 1 Location NZ Jul 14, 2013 #2 You can, it just won't oxidise the tank as well as one suited for that size would.