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Specialty Chemistry Forums => Citizen Chemist => Topic started by: ToddHotchkiss on September 07, 2021, 04:31:25 PM

Title: Fizzy Fountain
Post by: ToddHotchkiss on September 07, 2021, 04:31:25 PM
I made a fountain out of 6" square aluminum tubes. I'm pumping water through aluminum pipes to about 12" from the top of these square tubes. The water overflows, creating a pleasant sound, as it spills over the edge. Lately, I've noticed that the water is fizzy, and off-gassing. There must be something going on chemically. Any ideas what it could be?
Title: Re: Fizzy Fountain
Post by: Borek on September 08, 2021, 02:37:58 AM
The only thing that comes to mind is that aluminum tubes - if in water and in contact with other metals - will easily undergo galvanic corrosion.

Doesn't have to be the culprit here, just a first idea.
Title: Re: Fizzy Fountain
Post by: Corribus on September 08, 2021, 10:39:19 AM
Before invoking chemistry, are you sure you're not just drawing air into your water line?
Title: Re: Fizzy Fountain
Post by: ToddHotchkiss on September 08, 2021, 12:42:26 PM
BINGO. I added water to the underground reservoir and the fizziness disappeared. Thanks!