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I have been a member of TFP since 2014 and a sincere thank you for all of the support received over the years. Two weeks ago we had the company that re plastered our pool 10 years ago redo the mastic around the pool. The two guys who did the work were so impressed with the condition of the...

AND I got no response from magnets.

I apologize for not responding with an update sooner. The crushed vitamin C tablets in a sock made a marked difference in the rust stain and we had the company that did the replastering ten years ago inspect the surface. The result was pool surface is fine. Appreciate all of your help as always.

Makes sense, will try it Rebar coming through can’t be a good thing Is this indicative of plaster erosion, water issues?

Thanks zea3, will give it a shot, appreciate your help

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...

how do you tell the difference

Also, water is clear and chemistry is FC - 5.5, PH - 7.8, TA - 100, Ch - 250, CYA - 40

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...

mknauss, thanks for your guidance. Began the SLAM as soon as I read your post, brushed, added chlorine to 30 and reduced the RPM. The evening of the 5th I did an OCLT and the FC was 29, the morning of the 6th it was 27.5, kept it close to 30 for the 6th, brushed again and the OCLT started at...

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...

Appreciate the information. The carton says Clorox Performance Bleach with Cloromax Technology so wont be getting that any more. Thanks again

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...

Ok, here are the numbers today and the CSI tells me there is potential to be corrosive to plaster but based on the previous threads I will ignore that(unless directed otherwise) Pool water temp was 48 and I warmed the water to 72 before testing. FC - 5 CC - 0 PH -7.4 TA - 70 CH - 275 CYA - 30

Tim and Duraleigh - thanks for the clarification and advice. I added enough calcium chloride to raise the reading about 30 points, went to the pool store, Home Depot and a couple of hardware stores only had mixes with calcium chloride. The washing soda was completely dissolved, I learned that...

Tim, thanks for your reply. The pump is running, I just checked!! On TA I am reading the color change at 70 but adding another drop makes it brighter so I assume 75. On CH I used 10 ml water and got 9 drops x 25 for the change and on CYA, I use the big tube and slide because I have great...

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...

Thank you for the information. Knowing your experience and numbers really helps. At 1100, I can see what you mean.

pooldv, thanks again for the info. Appreciate your help on this and other issues. This is great equipment, water looks and feels great. chiefwej - thank you, have heard about the PoolCleaner in other threads and will check it out.

Thanks for the responses, much appreciated. I also spoke with a Pentair tech who told me trial and error was the correct approach without some specifics I didnt have but 1600 rpm for 16 hours would be a good starting point. I dropped the rpm to 1600 and will see how that goes, it almost seems...

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...

Thanks pooldv. Installation will hopefully be this week and the pump looks like the 3hp version. Came as part of the solar package for energy reduction. Will post a pic when completed. I want the same results you are experiencing!!

Switched to TFP last year and have never enjoyed the pool more. Thanks to everyone for your responses. Will let you know what we decide.

Patrick, we have lived here 20 years and were told the pool was built in the late 50's and that MAY be correct. The last replaster we had the tile and edging blocks replaced. That certainly made a difference in the appearance.

Thanks for all of your responses. Attached(I hope) are the requested pics. It is cleaning time so excuse the mess!!