gutsrus Posted June 3, 2009 Report Posted June 3, 2009 So, my SWG is shooting out some "dandruff" flakes, which get picked up daily by the Polaris. Is it possible, with a CH of 460 and a CSI at -0.2, that this process will lower the CH after time? Isn't the stuff my SWG is producing mostly Calcium? Seems that eventually, there would be less of it in the water if it's "condensing" and being removed. I guess time and testing will tell.... Quote
chem geek Posted June 3, 2009 Report Posted June 3, 2009 So, my SWG is shooting out some "dandruff" flakes, which get picked up daily by the Polaris. Is it possible, with a CH of 460 and a CSI at -0.2, that this process will lower the CH after time? Isn't the stuff my SWG is producing mostly Calcium? Seems that eventually, there would be less of it in the water if it's "condensing" and being removed. I guess time and testing will tell.... The amount of calcium removed as calcium carbonate flakes is a very small percentage of the total calcium in the pool. 10 ppm of Calcium Hardness (CH) in 10,000 gallons is 13 ounces (a bit less than a pound) of calcium carbonate. Are you sure your CSI is -0.2? At a pH of 7.5 and CH of 460 salt of 3000 ppm, CYA of 80 ppm and temp of 85ºF, the TA would need to be 80 ppm for a CSI of -0.2. Also, with an SWG the pH is usually higher than 7.5 in the pool so the CSI would be higher. Of course, in the cell at the hydrogen gas plate the pH is very high. One thing you can do is have 50 ppm Borates in the pool as this provides an additional pH buffer that will reduce calcium carbonate scale/flakes. Quote
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