qwikimpss Fish Addict Joined Jun 22, 2005 Messages 779 Reaction score 0 Location Pembroke, NH, USA Sep 26, 2010 #1 How long do your pressurized CO2 tanks last? I'm trying to decide on what size for my 75 gal.
ian plant your tank Retired Moderator ⚒️ Joined Oct 12, 2009 Messages 8,354 Reaction score 5 Location Lincoln uk Sep 26, 2010 #2 i'm using a 500g on a 50 gallon and it lasts about 2 months with a solenoid.