Rust and Brass

[Rando]

just noticed when cleaning the pump .. is that rust on the axis of my MP40QD and is this MP40QD axis made brass? If so, then I am not at all surprised that copper and zinc were constantly increased in the last ICP analyzes and I did not know where it came from.

 

[GlassMunky]

I have 3 MP40WQD in my 220G tank and I’ve been getting monthly Triton ICP tests and none of those metals are in my tanks water after a year of running with minimal to zero cleaning of the pumps

 

[GlassMunky]

Also, ETM doesn’t answer or respond to anything on these forums anymore.
you gotta call them directly if you want any info from them.

 

[Rando]

the question was addressed to the users here .. not to ecotech. nothing more comes from them anyway

 

[vetteguy53081]

This has been an ongoing issue and concern
Many state due to soaking in vinegar
Try muriatic acid instead

 

[Rando]

I always use bio citric acid for cleaning..

 

[Sisterlimonpot]

I believe the shafts are 316 stainless steel. Although very resistant to corrosion, they do need to be cleaned to prevent corrosion.

 

[mfinn]

I seriously doubt they would use brass on anything that goes inside the tank.

 

[Rando]

however, the axle seems to be made of brass. In any case, it looks very much like it in terms of color.

 

[Tim at EcoTech Verified Sponsor]

316L SS with a titanium nitride coating

 

[Rando]

OK thanks. then I am reassured

 

[GlassMunky]

316L SS with a titanium nitride coating

And now you make me a liar ;Dead

 

[Tim at EcoTech Verified Sponsor]

And now you make me a liar ;Dead

simple questions like this I do hope to answer but when it comes to specific customer service issues or a broken product it really needs to go through our customer service department, otherwise we really just end up doing the customer a disservice.