New Salt System, algae is recurring regularly

[kelemvor]

Your SWCG bubbles? How's that work? Doesn't it just feed into the return?
(Of course I understand that IF it bubbles, it's aerating and raising pH)

When the cell is energized, many small bubbles come out of the returns. They're easily visible. If you turn the cell off, no bubbles.

[CarlD]

When the cell is energized, many small bubbles come out of the returns. They're easily visible. If you turn the cell off, no bubbles.

Mine definitely does NOT do that! There must be some gasfication going on in the process.

[kelemvor]

Here's a little video. After it's been on for 15 minutes or so, there are far more bubbles than you see here. I turned it off so I could show off vs on and realized after taking 15 minutes of video that it would be VERY BORING to watch all of that.

The off/on cycle was to show that the bubbles weren't from a suction side leak.

[CarlD]

I WANNA SEE ALL 15 MINUTES!!!!!

(no, not really )

[FormerBromineUser]

I would watch and advance the timer to 15 minutes... If I had the link!

[kelemvor]

yeah sorry, maybe tomorrow I'll be inclined to make a better video when it's daylight.

[FormerBromineUser]

We're even now! I accused you of knowing about freezing pipes, and you deprived me of a cavitating.... oops, a captivating video! Heehee

[SunnyOptimism]

Gentlemen,

It's hydrogen gas bubbles. They are produced in the cell. One electrode produces Cl which mostly dissolves as hypochlorite/hypochlorous acid and the other electrode evolves H2 gas which is not as soluable in water

Definitive ChemGeek thread is here

The pH rise is both due to aeration/CO2 out gassing and the production of hypochlorite which is alkaline.