Re: Help interpreting FAS-DPD FC/CC test results **Sorry, long, techy post**

Originally Posted by
JuJuBee
... reducing Alk say to add Borax to raise pH from it's 7.0 level and to keep aerating until you reach your desired pH.
As I understand it, you lower TA by lowering pH (adding Muriatic Acid). Then you raise your pH by aerating. Repeating this process an necessary to reach your TA goal.
...dealing with a lingering 1.0-1.5 CC. Ben had advised I raise my pH to 7.8 and keep it there as it helps get rid of the CC quicker.
Oxidizing ammonia at a high pH produces less noxious CC than at a lower pH. This is why Ben adised you to raise your pH.
In doing so, my Alk began to rise also. I haven't added Borax for 12 days now. My beautiful Alk is MIA...
Adding Borax to raise pH will also raise TA. Raising pH by areating (CO2 outgassing) does not raise TA.
...we finally hit .5 CC on June 3rd. I still have to check it this morn to see if it lasted longer than 24 hours.
Keep at it until you have less than 1 ppm FC loss overnight and less than 0.5ppm CC plus one more day to be sure. Then your Ammonia will be gone and you can let the FC drift down. At that point you can resume your TA reduction by adding acid and aerating.
12'x24' oval 7.7K gal AG vinyl pool; ; Hayward S270T sand filter; Hayward EcoStar SP3400VSP pump; hrs; K-2006; PF:16
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