I would recommend getting a chiller for the fact that you set it and walk away, using fans evaporates the water to rapidly, unless you enjoy constantly adding water every other day. I picked up a used 1/3 hp prime in line water tower that cools down my 75 gal tank great.The best part about this brand is that they are fairly new in the hobbyiest world wich means even if you get an older model they are only about three years old or so and also they are built in the usa so parts and repairs are very accsesiable. I love mine and would never go back to fans.