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CLR cleaner

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Chris Jones

Member
I had a old garden hose nozzle that stuck open quite often and before I threw it away I dunked it in a container of CLR (that Calcium Lime Rust cleaner stuff) for a few hours. It fixed it good as new. But that's not what I'm writing about. I've used CLR on hand held shower wands and it didn't appear to do anything really--and didn't help the mineral buildup much either. But when this hose nozzle was put in it hundreds of tiny bubbles started rising up--kinda foaming. I put a lid on the container and it actually started building up pressure inside. It turned the normally green CLR into brown and made it stink. What in a hose nozzle would cause such a reaction with CLR? Aluminum maybe? Or Brass? Just curious.
 
Read the precautions on the label. Many of those powerful cleaners will react with soft metals. If it built up pressure it sure were'nt just the cleaning action.
 
Calcium hydroxide is a base (the opposite of an acid) that will chemically react with metals, sometimes very slowly, sometimes quickly depending on how active the metal is. Brass would react slowly, aluminum quickly. The result would be a gas & a salt formed - not the kind of salt you eat.
 

Bubbling brown sounds like you had a lot of iron build-up in it. CLR is (according to their MSDS) primarily lactic acid, and from my experience people usually get it for removing iron stains, and it should do the same for your shower head.
 
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