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    Chlorine disappearing rapidly with CYA at 50

    Sorry for the delay in responding, Starman, been tied up with work. Looks like we are pretty close to one another! Been to Shelburne Falls several times. My pool is 16 by 32 and has a shallow end of 3 ft and a deep end of 8 (average of about 5 ft) so volume is (16*32)*5, I used the Pool Math...
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    Chlorine disappearing rapidly with CYA at 50

    pooldv, guess I was reading and misinterpreting the CYA/Chlorine chart and just keeping it at minimum, rather than at target. OK that said, I just tested the FC in the pool and have gone from FC = 14.5 (at 8 AM EDT) to FC = 5.5 at 2:30 PM EDT which seems like a lot to me but the pool is in full...
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    Chlorine disappearing rapidly with CYA at 50

    Thanks, jmastron, I tested the FC before going to bed last night and it was at 15 - 15.5 (one extra drop seemed needed, but not sure it was), this morning I checked and FC is at 14 - 14.5 (again one extra drop seemed needed). Adding the extra drop in both cases may not have been needed as the...
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    Chlorine disappearing rapidly with CYA at 50

    Just tested again, not sure how long the interval was, but down to FC 10 with pool in full sun. Will bring it back to 20, but was wondering, is there a way to calculate the loss from sun?
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    Chlorine disappearing rapidly with CYA at 50

    Started the SLAM and have been holding the FC at 20 with the additions so far: Dropped to 15 on the first test (after a 5 hour interval); raised back to 20 Dropped to 18 on the overnight (9 hours); raised back to 20 Dropped to 17 after 3 hours with sun on the pool; raised back to 20 So far...
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    Chlorine disappearing rapidly with CYA at 50

    Thank you, chem geek, I'll have to give that a try starting tomorrow night, too late for today.
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    Chlorine disappearing rapidly with CYA at 50

    I just got my new TFT-100 test kit and went through some of the standard tests to see where I am. I had added enough bleach this morning (8.25%) to bring me to 4 ppm, but when I tested at 5 PM I am at .5 with the OTO test, so I tested with the FAS-DPD and also got .5 for FC. I also tested the CC...
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    Air getting into pump filter basket

    Thank you, k9sarretired, I have yet to get the time to test for the leak, but should be able to this week. I suspect that you may be right about the o-ring...
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    Air getting into pump filter basket

    Thank you, Richard320, I'll give that a try. - - - Updated - - - I'll read that section on Suction side leaks, must have missed it. I'm talking all joints suction and pressure side, but I only get air in the system from the suction side. Texas, Thank you!
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    Air getting into pump filter basket

    Morning, I am getting air in my pump filter basket, not a lot, but enough that it is noticeable. I have two lines, one from Main drain and the other from the skimmer, coming from the pool that meet at a valve housing so I can draw water from either or both at any given time. I only get air in...