MAG 36. Are they all this noisy?

[jeasley]

I just upgraded my sump size and bought a mag 36 to push more flow. This thing is in a closet and is so loud it is making me nuts. Do i have a bad one or is this just a bas choice for me?

I have it setup to go through a 3/4 " vinyl tubing to my return. I fgure about 8-10 feet of head with all the distance and such. i am using it submerged and the water surface is rippling from the vibrations. I also have it sitting on a couple of sponges to take the vibration down a bit. If I grab the hose coming off of the pump, it is vibrating like mad.

Help!

 

[iloveinn]

increase the size of your tubing. You should at least use 1", but preferably 1.5". Big vibrations mean that you're pushing too much head with it.

 

[jeasley]

Could I simply swap out the tubing to the bulkhead under the overflow? IT would be restricted to 3/4" at that point but it would limit the lengeth it has to travel at 3/4"

I swapped it out for something that had a 3/4" outlet.

 

[RichConley]

If you have a 3/4" line, you're using the wrong pump here. Even putting a max 36 through a bulkhead like that, you're probably losing 1000gph.

 

[sjm817]

You should be using 2" tubing (2x outlet size) on a Mag36. You have the equivalent of a cork in the pump right now, and are only getting a small fraction of the flow from it.

Why such a huge return pump?

 

[pyro383]

you also have cavitation issues due to the restrictions

 

[jeasley]

The pump has a 1" outlet so I am looking to swap the bulkhead out to a 1" since it looks like the bulkhead hole size is the same.
I had wondered when I did it if I was going to have troubles.

As for the size of the pump, I have a 210 plus a 125 sump. I want to do good turnover in addition I have a closed loop running a reeflo dart.

 

[sjm817]

IMO, that pump is WAY overkill. Generally 3 -5x display size for a return pump. That is ~ 600 - 1000 GPH. Even with 1" plumbing, the Mag36 will be severely restricted in flow anyway.

 

[gcarroll]

Jon, I had a simular problem with my Mag 36. most of the noise was from vibration. I ended up attaching 1/2" vinyl tubing to the underside of the pump to avoid the vibration. Mag does recommend 2x the outlet size for the plumbing. No one seems to do this and I suspect that may also be a problem causing noise. If running the pump unrestricted in a bucket, you will notice it is not that loud.

 

[jeasley]

Thank you Greg. Good advice. Now I just ned to figure out what to do. I really do not want to replumb the return. Can't drill a bigger hole in the overflow.

 

[shoman89]

I have a Mag36 to mix water and it is noisy as hell. This is with no piping or tubes attached.

--JeffP

 

[iloveinn]

is it touching the container? little vibrations can / will be amplified by the container.

 

[jeasley]

I really appreciate the input from everyone. Thanks for helping me see what I was missing.