- Jul 11, 2011
- 9
Butterfly said:Since you have received two pieces of info that seem to contradict, I just want to point out that they are both right
Shock level for CYA of 55 is between 17 and 22.
17 is from the PoolCalculator.Com and the 22 is from the CYA/Chlorine Chart in Pool School.
Both shock levels will work, but one is more aggressive than the other.
So I'm at 10 now..and I need to get to 17 or 22. How do I do this? Obviously I add more bleach, but how much more if I'm using 1.42 gal jugs that are 6% bleach.
The pool store gives me this print out every time I go and it's divided into two columns, one is current, and the other one is ideal.
For Total Chlorine it says ideal is 1.5-3, same for free chlorine. But I understand that is the ideal range, when you're not shocking to kill off organisms and bacteria in the water, correct?
Also, about the backwashing. I went out there and backwashed it a few minutes ago and I'm not quite getting the gist of the whole clean psi numbers. I'm not sure what my clean psi would be. Currently it looks like it's at 60..but the gauge seems to go up from there and it didn't seem to change when I backwashed and rinsed for a few minutes. Also, there seems to be a bit of sand in the little glass that doesn't move when I backwash? I have a Hayward SP series sand filter.
Would I be better off doing a partial drain and refill since the party is Friday? Or is this salvageable? I'm sorry this is just very confusing for me, with so many different numbers and factors and not being able to have a test kit readily available, I'm trying to do it by eye and based on what the results the pool store gave me, and I have so much to do with the house besides the pool for the party.