I've been using my Intex SWG for a month now. The first week or two it seems to have done a better job at increasing FC with shorter run times than it is doing now. Now it seems no matter how long I run it I cannot reach 6 ppm FC.
A month ago with the new pool, new water, new salt, new filter pump SWG, I could run it for 3 to 4 hours and maintain 6ppm FC in the morning. During the day lose a couple ppm, repeat. Now it seems it doesn't matter if I run the combo pump SWG for 4 to 10 hours I'm not reaching 6 ppm. I usually get to 4.5 FC so then by the evening I'm at or below minimum FC, 2 to 3 ppm.
Water is clear. OCLT passes. I lose .5 ppm at night at last OCLT. But I'd like to keep my FC at 6 ppm in the AM. Can't seem to do it. I cleaned my SWG cell a few days ago but it didn't help.
Is this normal? Is an Intex SWG going to work optimal the first week or two with new salt and then settle down like mine has? I see bubbles on the SWG plates every time it's running. Once I checked towards the end of a cycle and there were none but I think I read that's normal when in gets within 30 mins of the end of the run time.
Since increasing run time more than 4 hours seems to do nothing for me I think I'm going to go back to the recommended run time of 3 to 4 hours and see if FC drops below Intex recommend levels and then call them again. Per my last call it seems that's what they want to hear before they take any action.
Or maybe what I'll do is use bleach to get it up to 6 ppm and then go to a 5 hour run time and see if I can maintain.
But I guess the whole point of my post is, shouldn't I be able to increase FC by increasing run time? And then decrease run time to maintain. Or maybe an SWG doesn't work that way and once all my pool water has passed through the system once or twice then SWG won't continue to work the same way? If that is the case then even my thoughts of a 5 hour run time is too long.
Flow rate of my system is 2150 gallons per hour. Sanitizer output is 11 grams per hour which works out to be .6 ppm per hour with my pool.
CC 0 to .5