New Salt System, algae is recurring regularly

[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.

[kelemvor]

Yup, there ya go. That's the thread I was thinking of. I didn't realize it was on the other forum.

[SunnyOptimism]

Just remember, for fire safety, no lighting matches near your returns

[JimK]

Mine produces visible bubbles at the returns as well. I use to have rising pH, but since lowering TA to about 80 (I use to keep it around 100) the pH rise has pretty much stopped. It's been 2 full seasons since I've added acid.

[SunnyOptimism]

Mine produces visible bubbles at the returns as well. I use to have rising pH, but since lowering TA to about 80 (I use to keep it around 100) the pH rise has pretty much stopped. It's been 2 full seasons since I've added acid.

Agreed!

I keep my TA at 70-80ppm and borates at 50ppm. Since adding the borates to my water in August, my MA additions went from almost every other day to once every 5 days. In fact, I just had a recent dilution to my pool water and I need to add about 8 lbs of boric acid to get my Borate levels back up. I like to use boric acid instead of borax as the pH rise from borax is too worrisome to me. I'd need to add MA along with it or else I'll get cloudy water from calcium. Boric acid has the added benefit of bumping my pH down a bit on addition so no need to worry about calcium issues.

But even with all that, I always know when the cell is running by the little bubbles coming out of the returns.

[JimK]

Agreed!

I keep my TA at 70-80ppm and borates at 50ppm. Since adding the borates to my water in August, my MA additions went from almost every other day to once every 5 days. In fact, I just had a recent dilution to my pool water and I need to add about 8 lbs of boric acid to get my Borate levels back up. I like to use boric acid instead of borax as the pH rise from borax is too worrisome to me. I'd need to add MA along with it or else I'll get cloudy water from calcium. Boric acid has the added benefit of bumping my pH down a bit on addition so no need to worry about calcium issues.

But even with all that, I always know when the cell is running by the little bubbles coming out of the returns.

Yeah, I also keep borates at about 60 and use boric acid so I don't have to add acid with it.

I did use borax at spring opening when pH was a little low.

I like seeing the bubbles as it lets me know the cell is still working.