Jandy says 1-3 PPM of FC?

[wayner]

I am replacing my Jandy (aka Zodiac) salt cell. In the manual it recommends the following, in accordance with APSP standards:

FC 1.0-3.0 ppm (Continuous exposure to levels above 3.0 ppm may cause corrosion of pool metals)
CYA 50-75 ppm
pH 7.4-7.6
TA 80-120 ppm
CH 175-409 ppm

But the reference pages here at TFP seem to have 3.0 ppm of FC as the minimum. But Jandy is saying that is dangerous. What gives?

 

[jblizzle]

The Jandy people do not understand the FC/CYA relationship and are just parroting very old and inaccurate standards.
The FC of 1-3 is pretty accurate if you had 0 CYA in the water, but the fact they suggest a CYA range indicates they do not "get it".

Follow the TFP recommendations if you want to maintain a clear pool.

 

[ThinkPad]

If you do not maintain the proper chlorine level for your CYA level, you will end up using even more chlorine every time algae blooms.