what size chiller?

[acr0p0ra]

Im setting up a 160g tank. there is 3 400w mh in a canopy and im using glass tops. it gets very hot in the canopy so im going to have to do some sort of ventilation system. I'm sure that is not going to stop the tank from getting hot. it reached 89 degrees after 4 hours of lighting. total water volume is aprox. 180g

also, any particular brands worth looking at?
thanks