Baquacil and chlorine combine very rapidly. As long as there is still some baquacil in the water, the FC level will go to zero rapidly. Also, if there is any chlorine left after fighting the baquacil, it will be rapidly consumed by sunlight.
The cases are basically milk carton crates, I believe 16 quart in size, that hold four 1-gallon plastic jugs of Hasa chlorinating liquid. It's very cool and I thank my pool store every time I buy from them for offering the chlorine at a reasonable price and for reusing the bottles.jule said:The recycling program you seem to have is interesting. Our cases aren't plastic, but cardboard. I've yet to find a store within 50 miles of me that has that kind of program. We recycle ourselves.
This seems to suggest that you are losing very little FC overnight, but I can't be sure because there isn't an FC level listed from after the final chlorine addition of the evening.jule said:again about midnight FC zero so added one and a half gallons shock
numbers @ 6am this morning:
FC 21.5
I am not sure I understand what you said here. You appear to be say that you both do and don't lose chlorine during the day.jule said:The FC is not holding overnight, but it has been holding around 14/15 over a 6-9hr period during the day. So, to go from 21.5 to 0 in 9hrs under a weak sun and mild temps suprised me.
There are only two ways to remove baquacil, either oxidize it with chlorine (or something similar) or replace the water. In almost all cases using chlorine to oxidize the baquacil is the most efficient approach. That does require a substantial amount of chlorine. Replacing water doesn't work so well with a vinyl liner because you can't do a complete drain, so you are always leaving a substantial amount of baquacil behind.jule said:I was told that Baqua was low enough to begin a conversion without using anything to remove it.
windy100 said:Jule, did you backwash?
During my conversion, I backwashed every day right before adding liquid chlorine in the evening, even though the filter pressure didn't increase much.