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Good morning, Been following TFP for several years and everyone in these forums has been generous with time and good advice. Last week I noticed what looked like 2 rust spots on the bottom of my pool about 1 1/2 inches long and 3/4 of an inch wide. I checked with my snorkel mask and plastic...

Good day. Been using TFP for 3 years with great results and appreciate all the help that got me started. I am getting yellowish areas on the walls and floor of my pool. When brushed they disappear in a cloud of what look like dust. I have done the overnight test 4 different days and the...

Good morning. For the last couple of months I have been seeing yellow spots on walls and floor of my pool, deep end and shallow. When I brush them, it looks like powder/cloud like and disperses. The spots can return after a day or sometimes several days or not for a couple of weeks. Sometimes...

Two weeks ago, I purchased several 3 - 1 gallon packs of Clorox 8.25% bleach(on the carton) for 9.99 at Costco. One of the jugs was actually 6.0%, thought they had just made a mistake. Went to a different Costco today and all they had were 3 - 1 gallon packs that said 6.0% for the same 9.99...

Good morning. Have been using TFP for almost 2 years with great success - This morning, my readings were ph - 7.3 fc - 5 cc - 0 ta - 75 ch - 225 cya - 25 -30 My concern is that the poolmath page is giving me a corrosive reading, kind of scary. Yesterday my ph was 7.3 and I added 60 oz of...

Good morning. Yesterday had a Pentair intelliflo VS pump(up to 3hp) pump and 420 Pentair clean and clear filter installed. Ran for 12 hours at 2500 rpm with the flow valve weighted to the floor drain. The filter pressure was 10. You could see movement in the water and all the jets were...

Good morning. Our pool is over 60 years old, 42000 gallon rectangular in ground. Re plastered a few years ago. We are converting to solar energy and part of the package was changing our single speed motor to a Pentair vs. The pool guy says our dual cartridges which are 175sq ft each are not...

Good morning all. The issue I have been dealing with is having to add 2-4 gallons(121 oz) of 8.25 bleach per day but passing the OFCLT until this past weekend when I did not pass so started the SLAM process. You can see the results below. My CYA was 40 when I started and this morning still...

Hi all, writing from just south of Dallas where is just started raining again but luckily no flooding in this area. I have been able to keep the pool chemistry pretty stable over the weeks but this morning my FC was 3.5 and I put in 2 gallons of 8.25 bleach which should have brought it up to...

Good morning. Been trouble free since April and have never enjoyed our pool more than this year. Thanks to all who helped in the transition. Yesterday my readings were: FC - 4.0 CC - 0 PH - 7.7 TA - 50 CYA - 40 CH - 350 I added one gallon of 8.25 bleach which is what I have been adding...

Hi there, thought I would ask a question. TFP since April with lots of your help. Very hot these days in Texas and I am adding about 2 jugs of 121 oz 8.25 Chlorox a day AND adding MA 2-3 times a week. The PH seems to keep drifting up. Are both({PH, FC)situations normal? Numbers this morning ...

Hi there. Switched my pool over to BBB at the end of May and thanks to all of the good advice and support, the water is beautiful and have added nothing but bleach and MA as needed. What has changed is the CSI message which is telling me "potential to become corrosive to plaster" or perhaps I...

Hi there. Pool - 42000 gallons Using a K 2600 test kit, results are: FC- 1.8 CC - 0 PH - 7.8 TA - 100 CH - 650 CYA - 110 I have been adding 3 gallons of bleach a day but cant get the FC any higher. Poolmath says we should add over 2000 oz of bleach and drain 50% of the pool water. My...