Testing water with puzzling results...

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Well, something ate what you added.

Add 20 ppm CYA worth of stabilizer using the sock method. Assume for FC purposes you have 30 ppm in the water. Test again in a couple days.

With the condition of the water you have reported, it would be nice to exchange a bunch of it to fresh, but your situation with fresh water does not sound like you can do that.
 
AveMaria472 said:
Ok… so I recall now that I bought a different stabilizer than I normally buy. Pic attached of the brand I bought. I added 3.5 lbs from the 6lb bag.

I also discovered something just now while playing around in pool math. I set my CYA to 0 and played with the target number to see what my CYA would be if I added 3.5 lbs of granulated CYA. I’m shocked to see that it says my CYA would only be 23! I guess I need to add more than 3.5 lbs! For my CYA to go from 0 to 40, pool math says to add 6lbs. I still have the rest of the bag that I can add (I weighed the bag and it’s 2.4 lbs still in there), if you advise that’s what you think I should do. Perhaps if the CYA is actually in the 20s, that’s why the test is reading 0???

But what’s causing the stiff hair??
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@mknauss I think we posted our last replies at the same time. Before I follow your advice, did you see this above?
 
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