Well not exactly, the pump is designed with fins to increase the surface area and therefore the heat exchange allowing the pump to run cooler. I can guarantee the company wouldn't spend the extra money on manufacturing if they didn't feel this feature was necessary. The covers you have installed prevent water flow around the pump, yes water will be there but it will be trapped reducing the conduction cooling effect the pump may require. It will run significantly hotter, which will likely lead to premature failure.

Often these pumps are noisy because the run too hot, the impeller gets warped from the heat and becomes unbalanced. This is why some people will say their quiet one is quiet and others will say the opposite.

You've created a temporary solution to reduce vibration noise but it may cause bigger problems than it has solved.

if you run it out of water, then it would still be hotter then it is now, even the "trapped" water will probably only heat up to approx room temperature.

That's awesome man.

Looks like a bomb carefull the popo's dont come looking for you. Thats gotta be up for picture of the month though...

+1 Looks like that pump has a wetsuit on. LOL
Just make sure you have a back up ready when it fails. Love the DIY

:lol: So you've invented a pump that cools? Tanks run around 80, which is about 10 degrees hotter than room temp. Running a pump external increases the temperature gradient and air is still free to flow around the pump to help cool it, so the unmodified pump will likely run around the same, in and out of water.

To explain this in simpler terms, what happens when you wear a jacket in an 80 degree environment? Do you get warmer or stay around room temperature? :confused:

i slept like a baby last night... seems to be allot quieter even if it does break soon.