Question abourt keeping FC up.

Jun 24, 2008
Buffalo, NY
I have the TF100 test kit. I perform the daily "blue box" test for CL and pH everyday now. I want to keep my FC at around 4-5. Well, the test only goes up to 5 and it is tough to tell if I am "OK" or up over 5. Do you guys who keep your FC higher than 5 actually do a drop test with the powder everyday? Just curious what your nightly routines are for chlorine when youre up around 4-5FC.



TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
Silver Spring, MD
Once you gain some experience with the pool you usually have a good idea of about how much chlorine it is using daily. At that point the simple chlorine test becomes a quick double check that the chlorine didn't all vanish for some reason and otherwise you just assume that the pool needs it's regular does of chlorine.

Till you get that familiarity, you may need to do the full FC and CC test each day.