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Something strange happened to my heater... Any ideas?


Penny
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I woke up this morning to find a patch of bubbles in one of my tanks.. I tested the water and everything was perfect so I scooped out the bubbles and kept and eye on it.

Then I noticed the bottom cap had come off the heater. (It's a little 25w glass cheap one, but its adjustable and seemed to be doing the job)  I popped the cap back on. Then I noticed the the heater had bubbles all over the under side and it was making a steady stream of tiny bubbles (exactly the same size and consistency as pearling) 

Turned it off and let it cool in case it was over heating (water felt normal and I didn't get electrocuted) when I removed it the heater I thought I'd find it cracked but it had this weird stuff on it.. only in a patch and only on the underside. It's hard and crunchy like pumice stone. There's no water inside the glass

The heater has only been in the water for about 7 weeks.

🤔 Any idea what's up with it?

Thank you 😊

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It could have just been a small leak of current out of the heater.  You can do electrolysis of water (breaking it into hyrogen and oxygen gas) easily with just a 9V battery.  Over a few weeks, that could give you a build up of stuff from the water, and give you an effect similar to pearling.  Might not be enough to give you a 'shock', but enough to break down the water into its constituent elements, and probably do some scaling with the other ions floating around in the water.

I would probably not use that heater anymore.

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