Please Help Me

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As the filter gets dirty the PSI goes up and the flow in the returns goes down. The only way you can have the PSI go down and the return jets go down is when you have a suction side blockage. Try checking the skimmer basket(s) and also cleaning out the pump strainer basket and see if that fixes things up.

When you have several people swimming you often need to add a little more chlorine than usual.
 
ok thanks. i have been cleaning out skimmers and basket, but have also been backwashing right after so maybe i didnt notice the difference with just cleaning out skimmers. as long as i dont have CC then just adding more chlorine should get rid of the cloudiness, right?
 
A little cloudiness after several people were swimming is normal. Just add a little extra chlorine and give the filter some time to catch up. It is unlikely but you should also watch out for the cloudiness being the start of an algae problem. If the cloudiness gets worse or the FC level drops suddenly you need to shock.
 
here is my question. pool looks clear, last night at 10pm fc was 13 cc was 0. this morning at 6am fc was 11 and cc was zero. do i need to shock because of the loss of fc overnight? prior to adding chlorine at 9, fc was 2 and cc was 1. do you think we have something brewing? thanks for the input.
 
just tuesday the TA and CYA were where they are supposed to be, well CYA was still a little high 90-100. Our pool has total sunlight from sunup to sundown, so i dont mind keeping it a little hgigher. I cannot test it at this present time but will post full results later. My PH was 7.3 yesterday. I just thought that as long as I get it up to target level every night that it should be ok. Not everyone is constantly doing overnight tests evey night are they? My husband did the testing, so I think I will do another overnight test before I shock. Just thought as long as my cc was 0 and pool is clear right now that I am good.
 
If you do an overnight FC loss test and you are losing chlorine overnight, then something is wrong and you need to work on figuring out what is going on and solve the problem.

If you don't lose chlorine overnight, and the water is clear, and CC is 0.5 or lower, then everything is great and you don't need to pay quite as much attention until there is some new indication that there is a problem.
 
so i am trying to shock my pool and i think the sun is eating up the chlorine faster than i can keep up with it. it was 30 at 10am. i added 2 more gallons of liquid chlorine and tested it now and it is only 15. do i need to keep it at 40 all day and then do the overnight test, or can i let it come down and see what happens overnight? my water is clear and cc is 0.5 sometimes and 0 other times. we want to be able to use it tomorrow, so should i just dump more chlorine now and see what it is later tonight? thanks
 
If CYA is really 90+, then you have a problem. With CYA that high you shouldn't lose anywhere remotely near that much chlorine during the day, so there must be something in the water using it up. Keep adding chlorine to try and maintain an FC level around 30.
 

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Well, I misread that completely! :hammer:
Move along, keep moving, there's nothing to see here!!!

[s:2v3x32ws]Why would you ever want to go back to strips? They're so inaccurate how can you ever go bacK?
Once everything is balanced and running for a few days why not just use the OTO/pH kit (K-1000) to do the daily checks and run the FAS-DPD test once a week?[/s:2v3x32ws]
 
Chlorine usage varies by pool, usually from 1-3 and most often from 1.5 to 2.5 ppm FC per day (2 being sort of an average) though it varies by CYA level and amount of sun and water temperature (and bather load, if higher or if the pool is exceptionally small).

Chlorine "sticks" add CYA to the water if they are what I think you are referring to. If your CYA is already high, then that will just make that problem worse. I assume you are using either the TF-100 or K-2006 for the CYA test and not using test strips or pool store numbers since those can be inaccurate.
 
i am using my own kit to test the pool. but how is it that my cya is high and i am losing so much chlorine during the day? it was 23 this morning at 7am. hot humid and 90's all day. now it is 4.5. it is clear water and the cc is 0.5 or less (hardly even turns pink). so i just was wondering what am i doing wrong? I guess i will shock it again now and do an overnight test again, but even when my overnight was fine, we were losing lots of chlorine during the day. is there a way that my cya could be inaccurate...and it is really lower? how much cya is left from the sticks?
 
It is conceivable that your CYA reading is wrong, though not likely, it is also quite possible for there to be some organic contamination in the pool using up your chlorine. You can tell which it is by doing an overnight FC loss test. If you lose chlorine overnight then there is something in the water using up chlorine. If you don't lose any FC overnight then your CYA test results must be wrong.
 
ok so i did an overnight and lost. my fc at 10pm was 42. I had dumped 7.5 gallons of chlorine in at 640pm. now at 640am my fc is 33.5. so i guess it is back to the store for more liquid chlorine. hopefully i can stay on top of keeping my shock level where it is supposed to be all day. do i need to recheck the level every hour though, or do you think every 2 hours will do?
 
ok so far today have added 3 more gallons of chlorine. fc at 1100 was 28.5 prior to adding chlorine. now my readings are
FC=30.5
CC=<0.5
PH=7.7
CYA=75-85 depending on my eyes after looking at the dot for so long.
had to wait till the pool place opened to get more liquid chlorine. took a sample of water just to see what they would give me for numbers.
same sample prior to adding the gallons today.
this is what they got
FC=8
CC=10
PH=7.7
CYA=75
i think that they are very wrong with the FC and CC. I told them that I am losing chlorine like crazy and even at night. they said that chlorine can be lost overnight if i am not keeping it covered because becomes a gas or something like that. is that true? we dont cover our pool at night. it is very hot and humid here today. as long as i keep my levels up to 35-40 i should be ok until doing an overnight test again right? since my cya has come down a little, is it possible that my pool might be ok to use sticks again at a very slow release? maybe my cya needs to be higher than normal? just a thought. since i am losing so much during the day. i lost a total of 5 FC in 4.5 hours today. thats not normal is it?
 
Ideally, you want your CYA levels closer to the 30-50 range, so I do not think you would want to raise it again if you are down in the 80 range. Raising it would just mean you have to use higher and higher levels of FC to shock and then maintain the pool.

Also, you can not do an overnight drop test if you have a source of chlorine (sticks,tabs, etc) continually adding FC overnight.

You will drive yourself crazy if you try to follow the advise you find here AND the advice that you get at the pool store. In my experience, the employees at the pool store (who may not even have a pool) do not know what they are talking about. Not to mention that the accuracy of their tests are highly suspect (they may not be able to test FC over 8). Trust your own test results and if you want to have the pool store also test ... strictly use their numbers for entertainment purposes.

Edit: to fix horrendous spelling/grammar
 
I am not following their advice but it is interesting to see how they can tell you something completely wrong. They did say that my test kit was probably more accurate than their kit. I will just keep doing what I am doing until I pass the overnight test.
 
ok 9pm last night FC=31. no further chlorine was added. this morning at 6am FC=34.5 (did the test twice). how can that be? Now FC=19. Any suggestions as to the huge loss throughout the day? It is very hot and humid. I know that we will lose during the day regardless, but doesn't that still seem very fast for FC loss? PH=7.2-7.3. Does anyone know the max chlorine level for safety with swimming? thanks for the advice in advance.
 

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