Stainless steel pump impellers

Discussion in 'Pumps and Waterflow' started by Midnight Reefer, 1 Nov 2013.

  1. Midnight Reefer

    Midnight Reefer

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    Is is as stupid as it sounds?

    The ceramic shaft is the obvious and most simple solution in the long term, has anyone had bad experiences with stainless steel impeller shafts?

    In a SPS reef, surely this is not a wise or reliable choice for a keen coral keeper?
     
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  3. Nemos Janitor

    Nemos Janitor

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    Yes I have wondered myself. Questions I ask myself is, how much Fe, Ag, Cr, Ti, would be needed to alter or significantly change the natural makeup of natural seawater. I am talking about the rate the irons would naturally absolve into the water. Not taking into account any form of electrolysis or bacterial influence.

    As a diver I have seen corals grow off iron wrecks. So for me I think the thought that ss shafts are detrimental to reef tanks is a myth. IMO
     
  4. EFJ

    EFJ MASA Contributor

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    Problem with stainless steel it is not guaranteed not to corrode in salt water. Remember it contains some form of iron, which means it will eventually start to corrode as time goes by. The chances are it would start to corrode (mainly due to heat) than what it would take a ceramic shaft to wear. Ceramic shafts are very strong but another alternative would be titanium shafts just my 2c.
     
  5. Midnight Reefer

    Midnight Reefer Thread Starter

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    Titanium shafts???? I need 12:)
     
  6. Istio

    Istio

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    If i'm not mistaking the newer Tunze flow pumps use a titanium alloy for the impeller/propeller shaft. I think the company switched from SS a few years ago. George from Tunze would know if you'r keen.
     
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