I have a really bad green pool, 18x36. vinyl approx 100,000 litres. yes i am from canada. i do not have a good test kit for that reason. i bought some chemicals from a local place that does quality testing for free when you buy from them. my initial readings were:
saturation index -.4
total chlorine - 5
free chlorine - 2
ph - 8.1 (not sure if they account for the chlorine in this test, as my test strips showed ph was low before starting shocking process)
cal hardness - 80
my second test was done after holding chlorine levels at 10 for 48 hours. the test took care of the CC.
sat index .1
tc5 (low due to sunlight loss. test was done mid afternoon) i added chlorine as soon as i got home.
ta 80 (i added baking soda)
cal hardness - 80
I held FC levels at 10 for another day. I have a sand filter and it doesn't seem to be doing a great job. The pool looks like the algea is dead. the over night test held above 10 on my strip test. i know it's kinda guess work but it was a bright purple both times and i only added enough chlorine to get to 10 ppm. so seeing as how i sorta passed the overnight test and cc is less than .5ppm, the only thing left is to clear the pool. well I'm an impatient guy so i bought some flock and put it in. it's been circulated for 2 hours the the pump has been off for 3 hours now. when should i begin to see some improvement? also, i just tested the chlorine levels with a strip and it is showing 1 ppm. should I add bleach or just let it all settle for the full 24 hours before adding anything. if I do have to add bleach should i just disperse it, or should i disperse it and turn the pump and filter back on. Thanks for all the help guys I have learned so much already. the pool place has even commented on how well versed i am on the subject. i guess they won't be getting any more money from me. hehe.
added pics 3 days ago on top and today on bottom