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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...

Sorry for the n00b questions. We live in the UK! We need it to be relatively warm before venturing outside! There is a filter button on the control panel as well as the bubbles / heat controls. I was just confused as to why it was there if it runs every time the heater is on. Do you need...

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...

As my pool is vinyl, I don't think the increased CH should be much of an issue? I measured it last month (for good measure) and it was 80.

Just because I haven't got any more bleach (well, enough to add another 2 or 3 litres), and tomorrow is Sunday. The earliest I'd get a delivery is Monday or Tuesday, so don't want all this to be wasted effort

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 Steve, yeah I'm aware of the SLAM process, and know that Chlorine will get consumed quickly. This could almost have been a pre-emptive SLAM. There was virtually no algae, just the mere beginnings, so i was trying to stop it before it got a hold. Thats what I found odd, that such a small...

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...

It was probably about two weeks ago when I added some dichlor. The pump runs a good few hours every day and people have been swimming a lot so I guess it’s pretty well mixed. Ive always struggled with the CYA. This is my first year using bleach. Before and for the last 10 years I used trichlor...

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...

Pool stores are non existent. We don’t have the weather for pool stores. Ill happily buy online. There are loads of retailers for pool stuff. I guess i just need to understand the maths and relationship between pool volume / pump flow rate / kw power / horsepower etc :) for example why are...

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

Very expensively [emoji23]. Used a company to who give you a US address who then ship internationally.

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...

Oops. It’s been a long day.

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...

Thanks. I’ve don’t use MA. I use dry acid. Always have

I wondered that too!

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...

It is when you have to ship it to the US. Then ship it to the UK. Then pay customs charges! Expensive much!! I’ve not needed to drain the pool yet because of the rain so maybe it’ll be ok. It’s still hammering down now! Stupid English weather. ☔️

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...

Aeration might be a problem since I have no jets or water features. But as I say I can stick with soda Ash for now until if / when we leave the EU and reverse the anti-borax law haha