Salt water conversion

[Dunedin1]

Ive been running a salt system (hayward) for 6 years now, replaced the t9 cell 3x and still cant maintain a algae free pool here in Florida. Everything in pool area has corroded from the salt (although I am less than a mile from gulf). Thinking abut reverting back to fresh.
Whats new, any experiences or recommendations in chlorine ? UV? Ozone? I used the inline feeders previously.
Thanks.

 

[mknauss]

Sorry to hear your issues. The majority of members that have looked at sanitizing methods this year are switching to Saltwater chlorine Generators. So maybe review why you are having your issues before you switch to liquid chlorine?

To switch to liquid chlorine, you simply start adding what the pool needs EVERY DAY. Or you invest in a Stenner pump and tank system and add liquid chlorine to the tank every week or so. You would need to adjust how much is pumped in to the pool each day with testing.

UV - Ozone - etc are all magic. You can install them, but you still need all the liquid chlorine you would need with out them.

 

[Dunedin1]

well, Im gonna check out the stenner system as an option.
This is year six, just replaced the cell...again. Im running year round down here, 9hrs a day, a bit less in the winter. Pool is never closed. I usually run the generator at 43 percent, that is 25k t9 cell on a little 10,000g pool.
I use the TF100 kit and the little Taylor kit for daily chlorine/ph checks.
I just cant keep the chlorine level at 5 (anything less and light surface algae forms)
Clear water after a slam, usually every spring and at least once a summer depending on rain.
After a couple weeks it starts dropping again.
I originally switched to salt thinking it would be easier...
Every rain I have to add chlorine (Lowes 10percent) and it rain several times a week down here, some weeks almost daily.
PH 7.4 and CYA is round 60-70.
I even float a tablet occasionally.
Looking for better options.
Pic show pool this morning, chlorine dropped to near zero and is cloudy (we did have rain last night)
...and yes, salt does corrode the pool cage.

 

[Griswald]

well, Im gonna check out the stenner system as an option.
This is year six, just replaced the cell...again. Im running year round down here, 9hrs a day, a bit less in the winter. Pool is never closed. I usually run the generator at 43 percent, that is 25k t9 cell on a little 10,000g pool.
I use the TF100 kit and the little Taylor kit for daily chlorine/ph checks.
I just cant keep the chlorine level at 5 (anything less and light surface algae forms)
Clear water after a slam, usually every spring and at least once a summer depending on rain.
After a couple weeks it starts dropping again.
I originally switched to salt thinking it would be easier...
Every rain I have to add chlorine (Lowes 10percent) and it rain several times a week down here, some weeks almost daily.
PH 7.4 and CYA is round 60-70.
I even float a tablet occasionally.
Looking for better options.
Pic show pool this morning, chlorine dropped to near zero and is cloudy (we did have rain last night)
...and yes, salt does corrode the pool cage.

But not the salt from the pool. It's on the order of 10 times less salty than the ocean. It's salt in your air that's doing it.

 

[laprjns]

Im running year round down here, 9hrs a day, a bit less in the winter. Pool is never closed. I usually run the generator at 43 percent, that is 25k t9 cell on a little 10,000g pool.

You are only adding 1.9 ppm of FC per day.

 

[Dunedin1]

You are only adding 1.9 ppm of FC per day.
View attachment 146599

 

[Dunedin1]

Interesting, I didnt know about that calc, just use the old pool math page. Im running bigger cell, do you think I need to turn it up or maybe even upsize to hold the chlorine level up?

 

[rphpool]

yes you need to increase run %, time. With the pool volume you have you need to maintain 4-5 ppm FC @ your CYA. You might need to SLAM again to kill anything that is growing. Others with SWG cells will chime in , I run a Stenner Pump Chlorine pool.

 

[mknauss]

Once you complete a SLAM Process to rid the pool of algae, you should set your SWCG to generate at least 4 ppm FC per day and then test daily to see if that maintains your FC in the target range based on your CYA using the FC/CYA Levels

At 9 hours a day run time you need to have the SWCG generating at 90%.

 

[Dunedin1]

ok, wow, maybe Im just losing the battle by under generating, thanks.
...and I thought I had it figured out.

 

[mguzzy]

The new pool math app has a few advantages over the old one. The addition of SWG models to choose from and the way it calculates the FC contribution is really nice.

 

[Dunedin1]

I just downloaded/ installed app. Its different for sure, looks good thou.