HI!! our tank is a 90 almost 3 months old, took us about 4 or 5 good attempts while cycling to like our setup and make it what we wanted, so be patient, there were times I was really ready to throw in the towel and we had barely gotten started! Good luck to you. Make sure you leav plenty of swim space for the fishies, that is what we ran into at one point because we had so much rock.