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  1. T

    Filter and pump sizing issue?

    Thanks-i am always confident i see it the exact same way, i was just never confident that it was totally gone until way past where i should be
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    Filter and pump sizing issue?

    @setsailsoon yes it does-thanks! I always say disappear or totally gone here, good to know I'm not alone do you find doing it in daylight is any different? i have seen that advice also
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    Filter and pump sizing issue?

    I forgot to ask-ask far as CYA goes, here is my trouble. I think I can still see it when I know I am way past (lower/more weater in tube) than I should. Even this picture frm the link below from pool school/taylor shows when the test is ended and i think you can still see a black dot in there...
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    Filter and pump sizing issue?

    Ok, on to some results-added to get to 20 before bed, woke up and checked it at 9am-it is a very cloudy day, so i would assume there isn't much effect from the light. I got a result of 17.5 But, we did get unexpected rain last night-not sure how much but at least 1/2 inch. That would have...
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    Filter and pump sizing issue?

    2) I am not confusing the 2, i am just saying that it is easier to do when there is no light because then there is no sunlight loss at all. I know the sunlight loss is not significant, but losing 0 when it is dark is better than accounting for an insignificant amount, in my opinion. I understand...
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    Filter and pump sizing issue?

    No, I'm not doing that, I measured it to the exact ounce. I was just saying that even if i were to go way over, it is night time so i shouldnt lose anything if there was no issue. Meaning if my CYA is 40 i should SLAM at 16. I did 20 assuming CYA 50 just in case and should stay at 20 if all is good
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    Filter and pump sizing issue?

    Surprising result. SLAMed the pool to 20 FC (from 3, added 17 with 1 gal, 1 qt, 2 cups). Checked an hour and a half later, was down to 16.5. Doing this after dark (how do people SLAM in the daylight and account for the light eating the FC?). Just added 3.5 more, going to check in an hour or so...
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    Filter and pump sizing issue?

    Oh-yeah 25x1.4 is 35 but the way it says it on the label, it is GPM/FT2 which i always knew to mean divided by if it is as simple as 35GPM flow rate filter and 60GPM pump, that seems like the pump is too big, no?
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    Filter and pump sizing issue?

    @duraleigh got these results minutes ago: FC 3.0 CC-.5 (I think more like .25, i have seen this test get way pinker and still go clear on 1 drop) Ph 7.6 TA 110 CH 225 CYA-ugh i guess 40- i hate this test, i am going to SLAM assuming 50 to be safe but i can talk myself into this being 30 or 40...
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    Filter and pump sizing issue?

    around 2.5. I was under the impression that adding about 3ppm per day was normal on sunny days
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    Filter and pump sizing issue?

    @anotherpyr thanks for this-is there some formula I can follow to do the math to know how much flow rate the pump is above the filter? As I look at it, the pump is 60GPM and the filter is 25 GPM/FT2. So if I divide the 25 by 1.4, I am of course way under the 60 on the pump
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    Filter and pump sizing issue?

    @duraleigh I can give it a try but I assure you that I followed the SLAM process in every detail and every night I bring the FC up to 5.5 (my CYA is between 30-40) I asked A TON of questions earlier this year in this thread (below) as i had a terrible combined chlorine problem that ended up...
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    Filter and pump sizing issue?

    Ok, well I am surprised. One answer brings many questions. I could not feel any grit and check like 12 different spots. It poofed away every time. So, that requires more background: In 2017, the filter was 11 months old and I took it back to the store complaining of this-they checked the...
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    Filter and pump sizing issue?

    Ok I will give that a try and report back shortly-makes sense to test I just can't imagine it is organic if my levels are all good and water is crystal
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    Filter and pump sizing issue?

    Yes that is the filter, I was told to add it to my signature line so I did. I will add it to the original post The original pump-i dont remember exactly-i know it was a hayward power flo but i think it was less HP because it comes out of the return way harder now
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    Filter and pump sizing issue?

    Re posting with new information: Hello All, Long post, here is the short version: I am concerned that my pump is too strong for my sand filter. I have a 10K gallon pool. Please see the pics for the specs. I do not know enough about the math to know if they are ok together. Longer version as...