I have a 125 gal tank with a 40 gal sump. I just picked up a 1/3 horse Arctica chiller and I'm confused about how many gallons per hour I should put through it. The chiller instructions say min 480 GPH , max 2400 GPH. I would tend to think the more water I put through it the faster it would cool and the less time the chiller would be on but 2400 gph seems like too much movement. Is there some kind of rule about how many GPH you should run ? Thanks