I opened my pool yesterday to black water, added 3 lbs of granular shock before reading how to turn your green swamp crystal clear.
Pump has been running 22 hours.
Today i have changed the DE twice and cleaned it out. But i decided i better do some test to see where i am at.
Both kits have new chemicals last month form the manufacturer
Quick test with K-1000
Chlorine is 5
PH is below the chart with yellow matching the chlorine test.
FC = 4.5
TC=4.5 of course
CYA is below 20 ( i never did get he black dot to disappear completely but it did get harder to see) did test 2 times
TA= 10 (did test 3 times)
Should i get the PH up using the calculator. or the CYA or both ?