Good Day Everyone! Just want to say thank you for the wonderful resource this website is. I hardly even think about my pool anymore. Anyway a colleague of mine has been having issues this past weekend and I had him bring a water sample into work today and tested it this morning.
He went away for the weekend and now there is a green coating on the bottom of the pool that is almost like a stain by his description, it doesn't vacuum up. He can see the bottom.
Basically 2 pool stores were telling him his FC was around 3-4 ppm and they had him add low n slo or something like that and all this other stuff. The end result is test results as follows:
Anyway he has a 30,000 gallon Chlorine Pool, he has had the filter running for 3 days or so straight since he got home and noticed it. He hasn't added any shock or chlorine which makes me shocked about the FC levels I am getting given 2 pool stores told him 3.0 - 4.0 ppm anyway now on to the shocking part (one also told him, a very reputable one I thought, multi million dollar pool builder that his CYA was great at a reading of 129 on there chart, scratch my head).
I had planned on telling him to slam and even draining his pool to drop the CYA. I pretty much figured he is basically already almost at SLAM levels so might as well just slam even with the large CYA. Also the TA is ridiculously high. Anyway with that said I have instructed him to add a jug of 6% bleach tonight and a jug of 6% bleach tomorrow morning, along with adding some dry acid from walmart (about 7 lbs) to get the pH down so the TA starts to drop as well. I am sort of guestimating and making up for the fact I can only test his pool water once a day.
He says the pool is completely clean in terms of no debris at all and I trust him on that. He is 68 and not very good with smart phones so I can't have him give me pictures. If it's still an issue over the weekend when I have the time I will go over there and try to help trouble shoot/test more frequently myself. He is by no means useless so he can pick up this test method once he see's the proof.
Anyway with all that said what does everyone think about my approach. Kind of hard as I am not there to test multiple times per day or do an Overnight FC Loss test, but just trying to work with what I can and help a coworker out, so any input you guys can give would as always be greatly appreciated. I think the green stain kind of thing on the bottom is probably just algae that is somehow stuck on the liner bottom, he said its been there to a lesser extent other times but now its everywhere. So sounds like he has always had algae on some level. Him and his family aren't swimming anymore per my advice until I can at the very least get it looking good and do a successful OFCLT. Just trying to get ahead of the ball so it is pretty much a 2 second thing by the time Friday rolls around. My biggest concern is that CYA I was originally thinking we were going to have to empty half his pool, but with the FC so high I am not so sure, might be able to get things under control and then worry about emptying and refilling.
He went away for the weekend and now there is a green coating on the bottom of the pool that is almost like a stain by his description, it doesn't vacuum up. He can see the bottom.
Basically 2 pool stores were telling him his FC was around 3-4 ppm and they had him add low n slo or something like that and all this other stuff. The end result is test results as follows:
Anyway he has a 30,000 gallon Chlorine Pool, he has had the filter running for 3 days or so straight since he got home and noticed it. He hasn't added any shock or chlorine which makes me shocked about the FC levels I am getting given 2 pool stores told him 3.0 - 4.0 ppm anyway now on to the shocking part (one also told him, a very reputable one I thought, multi million dollar pool builder that his CYA was great at a reading of 129 on there chart, scratch my head).
| Test Date | Test Time | FC | pH | TA | CH | CYA |
| 7/31/2017 | 6:59 AM | 30.5 | 7.9 | 140 | 125 | 85 |
I had planned on telling him to slam and even draining his pool to drop the CYA. I pretty much figured he is basically already almost at SLAM levels so might as well just slam even with the large CYA. Also the TA is ridiculously high. Anyway with that said I have instructed him to add a jug of 6% bleach tonight and a jug of 6% bleach tomorrow morning, along with adding some dry acid from walmart (about 7 lbs) to get the pH down so the TA starts to drop as well. I am sort of guestimating and making up for the fact I can only test his pool water once a day.
He says the pool is completely clean in terms of no debris at all and I trust him on that. He is 68 and not very good with smart phones so I can't have him give me pictures. If it's still an issue over the weekend when I have the time I will go over there and try to help trouble shoot/test more frequently myself. He is by no means useless so he can pick up this test method once he see's the proof.
Anyway with all that said what does everyone think about my approach. Kind of hard as I am not there to test multiple times per day or do an Overnight FC Loss test, but just trying to work with what I can and help a coworker out, so any input you guys can give would as always be greatly appreciated. I think the green stain kind of thing on the bottom is probably just algae that is somehow stuck on the liner bottom, he said its been there to a lesser extent other times but now its everywhere. So sounds like he has always had algae on some level. Him and his family aren't swimming anymore per my advice until I can at the very least get it looking good and do a successful OFCLT. Just trying to get ahead of the ball so it is pretty much a 2 second thing by the time Friday rolls around. My biggest concern is that CYA I was originally thinking we were going to have to empty half his pool, but with the FC so high I am not so sure, might be able to get things under control and then worry about emptying and refilling.
