Hi, just started my 77 gal tank, been set up for 4 weeks now, ready to get some cichlid, are these ok to mix together, Blood Parrot, firemouth, green terror. Was told also to get some top and bottom swimmers, a bottom fish would be a pleco, but what would be a top fish, that I could mix? Does the driftwood have to be real, or fake would be ok, and what about ph what is good level? Thanks to all that answer, Paul