Hi all. A couple of months ago I filled my new indoor SWG plaster pool after a couple years of planning and building. The pool was designed by a PE who specialized in designing and building pools for 20+ years. the pool was built by a company that has concentrated (mostly) on building and servicing (though not regular maintenance) commercial pools for about 30 years.
I believe everything is properly bonded, except for maybe the solar heat exchanger.
Here are my latest test results using TFT 100 kit:
FC 2.5 (I am now generating to increase to 3.5+, FC is pretty stable, drops slowly)
pH 7.6 (I have to add MA every day or two and I strive for now to keep it mostly in the range of 7.6 to 7.8)
CH 270 (I recently added calcium chloride, and will add some more to push it above 300)
Salt 3450 (recently added salt to raise from 2900, use white test strip)
Temp. 82 (Usually increases to 84-85 for swimming)
Liquid Solar Blanket (no comment because I really don't know what if anything it does for me)
Sandstone coping and patio, coated with a sealant
So anyway, a couple of days ago I came across a blog written by a guy who swears that SWG is worse thing to happen to pool consumers since people had to swim in unsanitized and unbalanced pools, back in the preindustrial days I guess. He has been working his blog for a number of years now and has posted what he claims to be un-contestable evidence that SWG systems are nothing but large profit centers for the pool companies and sooner or later will bring nothing but woe to the unsuspecting consumer. This guy is articulate and convincing.
After I read some of his material I thought I should just rip out the SWG, let or help the water return to a non salt condition, and according to him, live happily ever after.
I have since read many of the comments by contributors to this forum about this issue, and I have decided to take a more considered approach. In particular I will almost certainly add a sacrificial zinc into the water stream and properly bond it. If nothing else this should serve a an indicator of the existence of galvanic action: if the zinc is dissolving, that would indicate galvanic action and should provide some protection to many of the metal parts in the water. My concern here is adding zinc ions to the pool water.
I will appreciate any comments about this issue that the participants would care to share.
Thank you for your time.