View Full Version : Excess heat from Mag 9

07/09/2012, 06:15 AM
I have a mag 9 pump in my sump. Lately I've been having heat problems and thought it was just due to summer. After a power failure my Mag 9 didn't turn back on. I took it out and it was hot to the touch. I cleaned it well with vinegar and put it back in. It is working but still hot to the touch.

Is this normal? Do these pumps typically run hot. I don't think I ever noticed this problem before. Does anyone have a different similarly sized pump that might run cooler. I really do not want to disassemble sump to plumb for a external pump.

07/09/2012, 06:19 AM
I changed my mag 9 out because of heat issues. Went with a waterblaster pump and it runs with alot less power usage.

Chris Lakies
07/09/2012, 06:35 AM
I used to run mags for my returns. They were always very warm. Now i use sicce.

07/09/2012, 07:11 AM
Are Sicce and waterblasters internal or external?

Thanks for help. This was good to know.

geaux xman
07/09/2012, 07:35 AM
They're all internals. If you can get away with running an HY-3000, thats about 50w less. Thats like running a 50w heater in your tank at all times. A lot for a 37g tank.

93w 950gph

WB HY-3000
37w 750gph

WB HY-5000
60w 1300gph

85w 951gph

07/09/2012, 02:41 PM
thats a lot of pump for that size tank. i have a 9.5 on a 135 and it is still 5x turnover. do you use it in or external.

07/10/2012, 05:45 AM
One thing I have learned with internal pumps the higher they have to pump water and the older they get the more power they draw. I have a mag 7 that draws 130 watts pumping water up 4'. I also have a Rio 3100 that does the same. I agree with the others a mag 9.5 is too much for that size tank. If you want to switch to external try a panworld 40px (480GPH) and you will not have any noise plus no drop off in GPH, 45 watts, and no heat to your water.