Hi folks its me Mike from up here in PA. Figure its quiet and I can pop my questions in now. I got my new tank. 180 gallons. I am not sure what the recommended method is for diffusing CO2 into the water is. I use to have an old Ehein prefilter with a hose going into it but it walked somewhere when I moved. Also best place to buy a 20 LB tank. Also what's the recommendation on the gravel. I am thinking about Floramax but not sure about using it straight or mixing. _______________________________________________ AGA-Member mailing list AGA-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/aga-member