Hi Why would you need a heater and a chiller? i have kudas,erectus and abdominalis.
With the erectus and kudas i have a heater in each tank,which is set at 70 but with the abdominalis i have a chiler which is set to stay at 66,i have no heater in this tank, but find that i do need the chiller to keep the temperture at 66.
I don't think that apart from the abdominalis,any of the other sh need such cool water.