I have read about 20 articles today about what temp to keep the tank at with german blue rams. I have 4 False Julii Cory's in my 20 gallon tank. I would like to get a GBR (maybe 2) and 4-5 Rummynose tetras. Can anyone tell me if I can house these fish together? The article/description of GBR's on this website says to keep them at 78-80 degrees... LivaAquaria says 76-84... Petsmart says 80.. I would really like to keep them at about 79 degrees because I think my false julii corys would do fine at that temp. Can anyone help me out? Thanks!