Hey guys I'm trying to get a 40 gallon or bigger frag tank system going but I'm looking for any ideas on how I can save as much money as possible on this build. I do not care about aesthetics I just want whatever will help me get by well without spending a crazy amount. I heard that people have used like rubbermaid totes or other plastic containers as the tank instead. Is this true? And where would I be able to find one? Are all plastics safe to use? Thanks for any input and ideas!