i can tell ya the sun sun pumps are only good for about 6 to 8 months,then when they quit look out,i noticed one of mine quit workin and so i reached in to get it out and got my ass shocked as hell,yanked my hand out so fast i burnt it on the 250 watt halide i had over the tank,so i got nailed twice in one day,left a nice pertty burn mark on the back of my hand for 6 months after the fact,so i am not going with the sun model on my 75 gallon build,figure to go korillia this time,get a nano thats lasted 2 years and still going.