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Old 02-18-2010, 03:42 PM   #1
Mrs Smith
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Problem with Sedra impeller


Hi all,

So I'm bad, I admit it. I finally, after much procrastination, decided to try to figure out what was wrong with this pump (Sedra ksp 9000). It's supposed to run my ASM-G4 - and I have a softie reef that I've run skimmerless intermittently for years, as they don't tend to mind the higher nutrients. Anyway... I soaked the pump in vinegar, and have discovered that the impeller is really, really stuck. As in, I can't pry it out.

Any ideas, or should I just buy a new pump? I'm kicking myself for letting it go so long, but with the personal upheaval of late, it got shafted. I was hoping to just replace the impeller, but I guess not.

I do want to use this skimmer, if I can get it up and running and dialed in, that is.

(edited to say that to complicate things, I can't remove the skimmer from the sump, the bulkhead to connect pump to skimmer isn't there, and I'm utterly lost when it comes to skimmers...)

Danielle




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Last edited by Mrs Smith; 02-18-2010 at 05:47 PM..
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Old 02-18-2010, 03:58 PM   #2
Loverotties
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You mite try muratic acid dilluted with water.
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Old 02-18-2010, 08:35 PM   #3
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+1 anything that you can sock it in that will break down cal. will help. good think is you can get a replacement for $100 or so.
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Old 02-18-2010, 09:22 PM   #4
Mrs Smith
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The more I read, the more I've convinced that the only possible fix is to break the impeller/magnet into pieces as these have a tendency to swell and lock up.

So... I guess I'm going to just get a new pump. I am a little anxious about this as I'm not the most plumbing-ly-inclined, and am going to have to plumb it with the skimmer in the sump, as there isn't enough room to remove it. (And I'm not going to destroy a $400 skimmer just so I can buy a new one! )

If you had to do that (plumb in a pump to an in-situ skimmer) would it be easier to get a slip-slip bulkhead and PVC-glue the connector on, or a screw fitting and use nonpermanent tefon tape? I'm leaning towards the screw fitting (FITP), as PVC glue makes me nervous.
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Old 02-18-2010, 09:25 PM   #5
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Oh, and it's a 1.75" hole in the skimmer body - just use a regular bulkhead even though there's a subtle curve to it? (1.5" I presume?) It's an in-sump skimmer, so doesn't have to be leakproof.

Gah, I feel like a ditz. I HATE plumbing!
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Old 02-18-2010, 10:24 PM   #6
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The pump is installed easily using a 1inch uniseal, not a bulkhead.

I'm not sure why you can't remove it from the sump. Remove the cup. Pull the drain pipe up to remove it and then just lift the body out.
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Old 02-19-2010, 07:13 AM   #7
Mrs Smith
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Thanks for the uniseal tip - I have never used one, but that makes sense.

And the skimmer isn't removable because the skimmer is 8" wide at it's narrowest and I only have 7.5" of clearance in the sump, not to mention the overflow drains that take up some of that space. Trust me, I've tried to maneuver it out. It was placed in there before I put the tank on the stand, as the former owner warned me about the low clearance. It's not that it's attached to anything - it's that it's a big skimmer in a tall-ish sump. (Removing the collection cup didn't help enough - the girth is the problem.)

I'll look into the uniseals - thanks!
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Old 02-19-2010, 07:34 PM   #8
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I understand now. That sump is really limiting your options.
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Old 02-26-2010, 05:56 PM   #9
Mrs Smith
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Woo-Hoo! Problem solved!!

I found the exact seal I needed that made this really easy... love it! And the new pump came today, and it's hooked up, and I have bubbles!

Getting it all in there and adjusted required some contortions to say the least. There's enough space under the tank that I can get completely in there with the sump - something to be said for being small - and it's actually working!

Note that I had little faith it would come together that easily, knowing my luck and experience with skimmers.

Anyway, I just needed to share! Bring on the skimmate! (There's already brown gook accumulating. I figure I'll run it really wet for awhile.)
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