The biggest thing that i would change about my setup is the depth of the tank 13 inches deep is not enough for a decent aquascape in a 50 gal (long tank). Then i was never happy and i would fuss with it and that stresses everything out . A sump would have been a life saver too . Third on the list would be a controller even a cheap reefkeeper lite is fantastic and stops heaters from frying your tank after youve worked hard to get it where you want.