The tank mounts are 1/2" wide exactly.

I got one of these from Spencer and it has dropped my tank temp from ~85 to 78-79 with the warmer weather we've had here lately.

I have the 2 fan unit on my 50 gallon.

any chance on good shipping???? i would like one 4 fan for my new 120 build

Hi Steve,

Our website is set up to give discounted shipping rates. Try starting the checkout process, and if you're not satisfied with the shipping rates shoot me a PM. We'll work something out. And free shipping over $200 of course.

these are good fans for sure, it would do a job if your tank in basement. I have four of these and my tank is on main floor, could not keep up on hot days so i have to get chiller. Before i got it run like 24 hours and no problem but the dc adapter will get hot

are they continuous or can you set them to turn on when it hits a certain temperature??

on/off with a switch. i have mine plugged into a ranco controller.