Mag 12 Safe for submersible return pump?
 

I was just plumbing up my new tank, and I noticed that the Mag 12 (bought used) has some rust where the screws are. I was planning to use this pump as a submersible return, my sump isnt drilled. Has anybody used as a mag 12 as a submersible? Was there any adverse effect from the rust? Any help would be great.

The screws sometimes do rust on Mag pumps. I'm not sure if there's a SW version of the screws but you can try looking for a replacement set if they're really bad. I sometimes just dab a blop of silicone over the screws but of course that makes it a nuisance to clean the insides.

I've run a Mag12 submersed for several years. Still a goin'.

Sushiman:

I take it that you have no rust on your pump? So a dab of silicone does the job? Thanks for the advice I might try that till I find some stainless steel screws. Anybody know if Rona or Home Depot carry stainless steel screws?

Vic

You may have an easier time finding nylon ones.

If you're very lucky, you'll find SS screws at a local hardware store. I had to go to a marine supplies store to find SS last time I had a need for them (and I'm not sure how many marine supply stores you would have there in Calgary =P )

Would nylon screws keep up with the constant vibrations with the pump? Or would they wear out real quick, and I would need to keep a constant supply?

Vic

Any Rona should have a large selection of SS screws, but I have never worried about a tiny bit of rust , but as Delphinus said clean off the rust and a dab of silicone will do

I had a Mag 12 running as a submersible for 2 or 3 years without any trouble. I noticed a slight bit of rust but it seemed it was just a very fine coating on the surface. The screws did not appear to be breaking down at all.

Ditto. Just replace the cover hardware as required.

All rona's carry SS screws