Kalk and pumps - New Pump/skimmer?

[Anonymous]

I have been using a kalk reactor for over a year now. In the time period I have lost 2 mag12's and today lost a Sedra 3500 for my Euroreef.

I tried soaking them in vinegar with no luck.

I have my external Panworld pump that works fine and lasted over 2.5 years.

Does Kalk destroy sumbersible pumps? One reason I can think of is the impeller and housing are in direct contact with the water where as on the PanWorld - only the impeller is in contact with the water.

Another note is I now have no skimmer working. Should I spend another $100 for another Sedra pump that will die less than a year or get a different skimmer?
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economic recession
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Ferrari FXX

 

[bradl.]

Cant you just replace the impeller?

 

[Anonymous]

How do I know its the impeller?
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Mercedes Benz E Class
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Spyder Rodeo

 

[Anonymous]

Another note is that the maxijets in the main tank dont have this problem.
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joint
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gmac bailout

 

[ChrisRD]

In the past, I've had problems with submersibles seizing-up when I use kalk + a Ca reactor, especially when running Alk on the high side (but no problems with MJs or external pumps). The ceramic impeller shaft is usally the problem and sometimes the vinegar soak isn't enough to break it loose. I've actually had to break the shaft loose from the magnet by tapping it with hammer or twisting with some pliers (careful not to snap the shaft!). After that I soak all parts in vinegar again and reassemble. Some of those pumps seem to require really frequent cleaning to stay alive. I've killed a few of those types of pumps and prefer externals now.

JME

 

[Anonymous]

Problem is Euroreef is submersible only.
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1950 recession
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Ultram Rehab Forum

 

[ChrisRD]

With my ER I ended-up getting a second motor and rotating every couple of months or so (one disassembled, soaking in the vinegar bath, one running the skimmer). I'm sure that's not the answer you were looking for though... :wink:

 

[ZooKeeper1]

You really have to clean them frequently when using Kalk. It's the heat generated by the pump that causes it, that's why the external's dont have the same problem. Keep you're magnesium around 1300 to minimize the precipitation. And keep the drip line as far away from the pump's as you can.