High Chlorine Production

[BobinFL]

I have a pool pilot nano + that seems to be over producing chlorine. the pool is 17k gallons, and typically a setting on the Nano of 65-70% would maintain the pool in the 2-3 ppm free Chlorine. Now it is set at 12% and the Chlorine is 8 ppm and climbing. The unit seems to cycle, and there does not appear to be voltage at the cell when the controls says it is off. When it is on i get a lot of bubbles in the return water, indicating strong electrolysis. Any thoughts on what to look at next.

 

[mknauss]

How are you testing your pool water chemistry?

How long are you running your SWCG each day?

The Autopilot Digital Nano + will add 0.3 ppm FC per hour to your pool at 100% generation.

 

[BobinFL]

I use the hayward dpd chlorine test kit. I run the pool pump 11 hours per day.

 

[mknauss]

I would suspect your testing is not accurate. I suggest getting a proper test kit, Test Kits Compared. The best value for a residential pool is the TF100 from TFTestkits.net.

Your pool consumes more than the 0.4 ppm FC your SWCG is generating.

 

[BobinFL]

That manufacturer sells kits that all use the Taylor test chemicals, the same I am using. The website you recommend lists the TFT and my Taylor kit as the two recommended kits, so I believe my as kit is accurate as the TFT100.

 

[mknauss]

hayward dpd chlorine test kit

You need a FAS-DPD test kit for FC.

 

[BobinFL]

That is what I am using. The Taylor FAS-DPD kit. I forgot the FAS part in my initial post. Sorry

 

[mknauss]

And 'hayward'

OK - please update your signature with test kit and SWCG type.

How old is the R0870 powder? Is it dark in color?

 

[BobinFL]

No the powder is white