There are a few things that I would be interested in understanding better. I have pretty much forgotten everything learned in Chem 101 & 102.

From what I understand about SWGs, after the chlorine gas is generated, it dissolves very quickly into water and creates HOCL and HCL.

Based upon the amps in the cell, how much chlorine gas is generated and does this match the advertised production of the cell (see below)?

Does some of the HOCL and HCL revert back to salt before exiting the cell, which might explain the higher levels in the cell?

How long does it take for some of the HOCL to break down to OCL- & H+?

How long does it take CYA to bind to the chlorine?


Next, I found this derivation on a university web site:

In an electrolysis of sodium chloride solution experiment a current of 7 A was passed for 1 minute

o Electrode equations:
(-) cathode 2H+ + 2e- ==> H2 and (+) anode 2Cl- -2e- ==> Cl2
o (a) Calculate the volume of chlorine gas produced.
Q = I x t, so Q = 7 x 1 x 60 = 420 C
420 C = 420 / 96500 = 0.00435 mol electrons
this will produce 0.00435 / 2 = 0.002176 mol Cl2 (two electrons/molecule)
vol = mol x molar volume = 0.002176 x 24000 = 52.23 cm3 of Cl2
o (b) What volume of hydrogen would be formed?
52.23 cm3 of H2 because two electrons transferred per molecule, same as chlorine.


First, is this formulation correct?

If so, a cell running for 24 hours would produce 4418658 cm3, 4419 liters or 14 kg (31 lbs). This is 21x the advertised production rate so if true, a majority of chlorine produced quickly reverts back to salt before returning to the pool.

Anyway, I have measured the water coming out of the return and, as Sean pointed out, it was only 2-3 ppm higher than the pool water. So my premise is that there may be some HOCL in very high concentrations in the cell but does not survive very long.