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Hi, I've been meaning to ask this for a long time, but always forget. My TF100 chlorine only cylinder and blue spoon have become very discoloured with a black residue. It makes it very hard to see what colour the sample is. Whats the best way to clean it off? I've read somewhere that muriatic...

Hi I have recently opened my pool. CYA was low, so added the requisite 250g dry stabiliser to bring it up to ~30/35. But, now the sock that it’s in has split and I have a nice pile of dry stabiliser on the pool floor. The powder is too light for my vacuum to suck up. Is this likely to...

Hi, My brother has just bought an Intex inflatable pureSpa. 795 litres. As the family “pool guy”, he asked me how long he should run the filter for. It’s a cartridge filter. I checked the manual and it does not mention an optimum running time, only to clean the filter every few weeks...

Hi All, I returned from a weeks vacation today to a green swamp, so began slamming straight away. pH was 7.5 FC was 0 (I added bleach and a 200g trichlor puck before going away to keep things ticking over, but clearly wasn't enough!!! doh) CYA was 40 when I tested before my holiday I've...

Hi I've got a bit of a conundrum for you all. Here are my latest set of test results: FC: 4 CC: 0 pH: 7.5 TA: 80 CH: 60 CYA: 35-40 I noticed some algae creeping up the sides of the vinyl, so i open Pool Math app and tap the SLAM button. My SLAM level is 16, and the app says add 2.1 litres...

Hi I know the CYA test is a particularly difficult / subjective test, but I am getting conflicting / confusing results. My pool doesn't have deep or shallow ends and so I always tend to test in the middle. But because of the week of hot weather we're having (Google it - Manchester is hot for...

Hi My pump has died. It had a good life - 12 years old. It's no longer manufactured, but I don't know of an equivalent... Here are the numbers from the top cover... Can anyone tell me what they mean? What do I need to know to buy a replacement? I'm guessing X horsepower and Y kW...

Hi I'm in the middle of a SLAM, all my algae seems to have disappeared (the green stuff at least) and now, I've got cloudy water... do I just keep adding bleach? You can see the pool below (ignore the massive white stain on the liner from when the tablet floater turned upside down and the lid...

Hi, I would appreciate some clarity on procedure for the FAS/DPD test. Normally I add one scoop of R0870 then add drops of R0871 until no pink remains. Then multiply by 0.5. However, I just came across a TFTestKits video on Youtube - FAS/DPD Chlorine test for the TF-100 - YouTube This one...

Hi i’ve just got round to opening my pool for summer. Gone to test the water and my FAS DPD reagent and spoon looks like this : Has it got damp ? Is it still going to give valid results ? Because I live in the UK it’s tricky to get hold of the reagents without ordering a full kit. Thanks Joe

Hi I've just returned from a weeks holiday. My pool was crystal when I left it. Bumped the FC up to the high end for my CYA. 10ppm. Then left a couple of trichlor pucks in the floating dispenser. I thought all should be well. Returned to this: Algae all over one side of the pool. Even...

Hi Yesterday my F.C. was at 5 so I bumped it up to 7 as per the chart with 15% bleach. Then it rained for the rest of the day. Tested again today and it’s down to 4.5. Is a 3.5 drop normal after rain? Or are there some nasties consuming my chlorine?? pH 7.3 CC 0 TA 75 Cya 50/60 Temp 18C...

Hiya, I am having spoon issues. The inside of my blue scoop has turned black. Not sure if this is normal or not... but I continue anyway. Also, every time I scoop some 0870, there is always some left in / on the scoop, as if the scoop is damp. Meaning I don't always get a full heaped scoopful...

In learning TFPC, I have a question about CYA. I know it shouldn’t fluctuate unless you add di/trichlor or CYA directly to the pool but how often should I be testing for it? If my F.C. is dependant on CYA then it would make sense to test it weekly? For example my CYA at last test, last week...

Hi, So just a quick question... where do UK people buy test kits from? I have a round-a-bout way of buying the TF100, but surely there is a better way? This is my method... Sign up for a US shipping address (yearly fee), buy TF100 and ship to US address... US company will ship internationally...

hi, I've just come out of hospital (2 weeks) and returned to a green nightmare. There is a layer of green algae across the entire floor of my above ground vinyl pool (26,500 litre). My first instinct was to shock it to FC 10, which I did with calcium hypochlorite (my last batch!). Since this...

Hi, Reading around the site and pool school, the TFP method seems to focus on the 3 Bs. Bleach I have, Baking Soda I have, Borax is another matter. I live in the UK and the European Union recently classified Borax as toxic. Therefore it is not on sale to the general public. Only to trade and...

Hi I've got 26500 Litre above ground vinyl pool. I want to start using the TFPC method, but it might need to start next season. Will liquid bleach damage my vinyl liner? Discolour it? We had a mishap about 6 years ago where a trichlor puck fell out of the dispenser and left a nice perfect...

Hi So i am waiting on international shipping for my TF 100 refills. Cost me an arm and a leg... but the package could still be another 2-3 weeks. In the mean time, I am testing using the K2006 colour chart and the Scuba II. Yesterday i shocked the pool to ~9 ppm FC because i noticed some...

Hi everyone I've just noticed a strange problem after returning from holiday. There is an awful lot of tiny air bubbles coming into the pool via the return. I've not seen any visible leaks between the pump and the pool so my only guess is there is a leaking pipe underground. Does anyone...

Hi I've been a long time pool user - my above ground vinyl pool has lasted 10 years and still going strong. I've always been of the belief that FC should be maintained at a level of 1-3ppm, pH - 7.2 - 7.8, TA - 80-120, and CYA between 30-70 (according to my old TF100 kit instructions). So...

Hi I've just received my Scuba II. So far I've tested Free and Total chlorine / pH with it and the results tally with my AquaChek strips I've been using for the last few years (not the same bottle!!! ;)) My pool is a 6000 gallon, 26,500 Litre above ground permanent vinyl pool. Cl - 1.8 pH -...

Hi I'm a new member of TFP. I have had an above ground vinyl pool for 10 years now and have dipped in and out of TFP for lots of fantastic advice. All my questions seem to have been solved without me needing to post. But there is one question, which I will post on the Testing Water forum. As...