Odd Occurence

Fmbiv

Well-known member
Jun 6, 2015
51
Bedford hills ny
For the last month my water had been pretty much the same:
FC 3-4
CC 0
Ph 7.6-7.8
TA 110
CH 300-350
CY 60ish

The ph started spiking so I put MA I. The pool and took to 7.2

TA went 90
And oddly FC went to 6

48 hours later FC is at 8, ph is back to 7.6 and TA is 100

The only other change I made was I changed my de filter grids out and went from using 1 filter to two.

Is there any reason my FC should spike like this? I haven't changed anything on my SWG or added chlorine.




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Fmbiv

Well-known member
Jun 6, 2015
51
Bedford hills ny
I changed the de grids on it as well. So I went from one clean but beaten up de filter to two clean filters with new grids. Perplexing.


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