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Thread: Kitchen Tap always blocking up with this junk

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    Senior Member skozzy's Avatar
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    Default Kitchen Tap always blocking up with this junk

    Maybe someone might have some idea what is going on here. For a very long time now, up to a few years ago we started to get a lot of green crusty looking stuff blocking the filter on the kitchen tap. If the water pipes bash from turning the tap off too fast the next time it is used it often clogs the filter. I am sus it is coming from my Solar Hot Water System (Edwards). Not sure what this stuff is, seems like calcium but wont dissolve in the C.L.R. product.

    Interested in some theory's you might have.






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    Possibly from copper pipes breaking down with a chemical reaction with your water supply, or an anode (heating element) in a HWS breaking down.

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    That looks like lime scale or calcium build up?

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    I suspect the hot water system cause the tap blocks quickly when using hot water and rarely notice it using gold.

    So if its an element then it's likely something I can't tackle.

    If it is lime or calcium shouldn't the product CLR break it down (like if I put some of that crusty stuff in a glass jar with CLR) ?. I tried it over night and nothing happened.

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    Looks more like copper chloride.

    Will it dissolve in ammonia?

    If it's not acidic water corroding copper pipes, it's likely to be a heating element in the HWS.

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    Yeah, the green colour could be indicating a copper compound, normally your lime is white or light grayish and will dissolve in anything acidic, even vinegar or Coca-Cola.

    I think a sacrificial anode is often made of magnesium (or not, our HWC people here are very secretive about what it is) but it is basically a silvery dull metallic staff/rod when brand new, and sometimes it gives a slight whitish colour with bubbles to the water (magnesium metal is reactive with warm water but not cold water). Also once the anode is eaten away, the water will often take on a rust-colour to it if it is a (mild-)steel HWC, indicating the inside of the cylinder is corroding (because the anode is gone).
    Last edited by irritant; 01-05-17 at 02:30 AM.
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    Check the anode in your hot water cylinder

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