Question on chlorine levels

[joel98z]

My PB just hooked up SWCG, and told me its best to allow chlorine level to rise to about 3ppm and then let them fall back to 1ppm and the rise back.. so on and so forth. He said bacteria and algae can become resistant to chlorine at consistently high levels. Any truth to this?

 

[mknauss]

No. Follow the FC/CYA Levels

 

[Mdragger88]

Umm no -

There are chlorine resistant bacteria but they are generally not a concern for most residential pools.
Follow the FC/CYA Levels
Dose to target for your cya with liquid chlorine & allow your swg to maintain.
Swg’s are great maintainers but they aren’t designed to get you to target from nothing.
Your pb advice is asking for problems.
In general most pool builders are great at equipment & terrible at water chemistry/maintenance.

 

[Newdude]

Congrats Joel and Welcome to the SWG club !!!! What CYA was he advising you to maintain those FC levels ? He didn't, huh ?

Follow the FC/CYA Levels

Religiously.


Bounce around in target range on the salt side of the chart all you wish. Many of us use the bleach side with slightly higher levels for some wiggle room. Either way, minimum is not an OK value. It is a 'You need to be in target range, and stat' value.

 

[woodyp]

Like 3 is a "high" level to begin with. Trust the chart.

 

[joel98z]

Thank you everyone for the guidance!!

 

[joel98z]

Oh one other question what about the salt content.. they told 3000ppm to 3200 ppm based on what the Jandy Aquapure SWCG is reading.. I used my TF Pro with Salt and it is reading about 200-300 ppm lower.

 

[Newdude]

The drop kit is the most accurate but even it is off by +/- 400. The cell is worse but unfortunately is in charge regardless of what your Taylor kit says. If the cell is happy, let it be.