I went to Marine Fish a few weeks ago to buy a fish. I asked about their CO2 tanks filled. They told me that it would be 99.00 filled the first time then 15.00 to exchange the bottle for a full one. This was for a 5 lb bottle. So today I went there to buy a 5 lb CO2 tank. I was ready to checkout when the guy told me it was 149.00 plus tax. I said "that sounds like a lot for a 5 lb bottle" so the guy went to check. They guy he asked looked at me and said "it was 149.00 plus tax". So I left and I will never return unless we have a meeting there. I think that is poor business and a disrespect to their clients.