You need to be up and pool side right now checking your FC loss! It is very important to do this before the sun hits the pool in the mornings.
Bluechip said:Your pool is just a bit smaller than mine. I am in TX and have full sun between 10AM-5PM. My CYA is around 40-50. I loose about 2-3ppm of chlorine a day. That means I have to add 1 121oz jug of 8.25% Clorox per day. By the 5th day my level is high enough that I can skip a day unless there is some reason not to (higher swimmer load etc..). If I used trichlor I would use about 2 tabs per day. It might be a little cheaper but it would add 2ppm of CYA per day to my pool too. I would have to replace water frequently to keep CYA in check. Overall it just works out better to use bleach.
Every pool is different. Start with 12 hours and adjust down from there. Pool School has an article on suggested pump run times.Question for you: When do you run your filter, meaning from when to when? We sound a bit like you where we get late/morning afternoon full sun, no shade, the worst is at around 2-3 p.m. In the past, we used to run our filter practically from 9:00 am to 7:00 p.m. and looking back, I think that's way too much! We do get some early sun in the a.m. (really only on half of the pool), however. We're thinking of running it starting at 10 am to maybe 6 pm to equal an 8-hour day of filter. Does this sound right, or can we get away with even using less than that?
BoDarville said:Also make sure there is no debris in the pool as well as in the skimmers or pump filter basket. The latter two areas are often overlooked but debris in those areas will act as a drag on your FC consumption just as much as if the debris were on the pool floor.
:splash:suziequsie2945 said:Ok, I restested everything again around 10:30 a.m. I am not sure if I should be testing everything at this point since the FC is still very high, but I did anyway so you guys can chime in if we need to do anything at this point.
FC: About 17.5/18
pH: Between 7.2 and 7.5
TA: 100
CYA: 40-45
The CYA lowered from 50 yesterday. We did get a lot of rain last night, which we had to empty, so maybe the rain is what lowered it.
At this point, what I see is that all numbers are within range, with the exception of FC which is due to shocking.
Is there anything we need to do other than wait for chlorine levels to drop to normal and then go from there?
Richard320 said:Just be patient. FC will come down a couple points every day. When it dips below 10, test pH and add Borax to raise it.
I'd leave CYA right where it is so you have some breathing room. That way, if you want to go away for a couple days, you can use the trichlor to keep the pool chlorinated.
Casey said:Has it rained? Were you vacc'ing to waste? Did you add water?
Fresh water is the only way you can dilute CYA. You are at a good range right now. I, and many others, do not want to see you throw the numbers out of whack and have you back fighting a high CYA battle with a green pool.
Bluechip said:Some water was replaced so you may have lost a bit that way, but unless you had a foot of rain it was a small amount. The CYA test itself is not completely accurate. A lot depends on lighting and interpretation of seeing or not seeing the black dot. It could be read at 40 on one day and 50 the next or vice versa, especially with new testers. That is why it is not a test that is run all that frequently. Once a month is fine. It just doesn't change all that fast unless you are using the pucks.