I have a 180 reef tank that I currently do not have a chiller on. Right now my temp never goes above 85, during the day with the A/C off (it was only done as an experiment). My lights are 2 400W MH, but I am adding 1, maybe 2 more soon. I leave the A/C on all day and my temp stays constantly at 80. Once I add the new MH I will need a chiller, I know. However, I will not need one by very much. All of the charts talk about pull down temps. I have also heard other people say that on a 180, the smallest I should go is 1/3. If I only need a pull down of 10 or less, even in the hotest temps, can't I get away with a much smaller unit?
Also, is there a big difference in performance from in-line to drop in?
Any advice or guidance would be appreciated.
Also, is there a big difference in performance from in-line to drop in?
Any advice or guidance would be appreciated.