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Ok I got 2 units of UV installed (Emaux brand from Australia- it’s the only one available here). My FAS DPD test kit arrived yesterday. There has been a chlorine smell at my pool last few days. So yesterday FC was 2.5 and CC 2.0. Put in 3 kg 70% chlorine (supposed to bring shock level to 12)...

Yes I think I would have to install UV and possibly ozone too. Again it’s not common here but couple of weeks ago some guys from Australia came to propose their system to us. Again they would have to ship it here and install it for us but if it breaks down they would have to fly in here to...

Ok one last test and the powder has finished ! Added 12 lbs of chlorine at 6 pm and at 730 pm the FC was 2.5 and CC was 2.0 ! Before that the last test was at 1 pm and FC was 0.5 and CC was 1.0

Anyway my FAS DPD powder is almost finished as I have been testing a lot. It will take 2 weeks for the refill to arrive from Amazon!

830 am FC 0.5 and CC 1.0. - - - Updated - - - It took 12 lbs of chlorine to decrease CC by 1.0 ! - - - Updated - - - pH has gone down to 6.8 now

My CYA is below 10. I do not have any test kit for TA. The last test was done in a lab and it’s low- 66

We will be closing for 2 weeks for Xmas and new year and we plan to drain the pool then. Its an above ground pool if that helps. I need a plan of action for the next 4 weeks till we close! I think it’s lots of babies peeing so high urea in the pool...

Ok so today 430pm FC 2 and CC 2 545pm added 2 kg 65% cal hypo 630 pm FC 3 CC 2, added 1.5 kg chlorine 830 pm FC 0.5, CC 1.5, added 2.5 kg chlorine Really not sure what’s eating up all my chlorine !! It’s 9 pm now on a Saturday night and I can’t stay back any longer so am going home. I will...

Isn’t it 45g/ hour ? Not mg ?

My salt level is good. It’s aroune 4200 today. Not sure how the cells are connected. Put in 2 kg of chlorine at 545 pm (from pool calculator this will achieve shock level of 12). At 630 pm FC is 3.0 and CC is 2.0. Will put in another 1.5 kg now and test later tonight.

This will be an ongoing problem of CC building up rapidly and staying in the pool. Other than using UV what else can I do?

Ok tomorrow night I will stay back at my swim school to dose and test after the last swimmer and then test again in 30 minutes. From that result, what should I do next? Use the pool calculator to add more chlorine for shock level of 10?

I didn’t put any extra chlorine in since I last posted and the chlorine is only from SWG. Today children has red stinging eyes and when I tested FC was 2.0 and CC was 2.0.

Ok reading this morning, 16 hours after putting in 1.4 kg of chlorine is : FC 1.0 and CC 1.0. FC isn’t going up much.

Yes I have read all the articles numerous times already and have quite a clear understanding of it in theory. I will do what I can for now and you all have been of great help.

Thanks for all that info Pat. I only managed to test it again this morning 14 hours after adding the 2kg of chlorine. FC is 1.5 and CC is 1.0 and water is blue for the first time in 2 months ! I can only add more chlorine after the classes this afternoon and from the calculator I should...

The only chlorine I have which is supplied by my pool guy is 65% cal hypo. I put 2 kg in today to achieve a SLAM of 12 (I got that from the pool calculator app). Will do the FAS DPD test again tomorrow morning and report it here. The only thing chemicals we put in are soda ash and salt and...

Thank you Pat!! I am very new to this forum!

FAS-DPD kit and Slam questions I own a small swim school in Malaysia and been having problems with high CC levels. I just got my FAS DPD kit and have a few questions. 1. Would the water in the tube turn completely colorless ? I find it turns colorless and a about 20 seconds later it’s a bit...

The brand is Astral - I think it's from Australia. Not sure what % but it has levels 1-7 and it's run between level 5 and 7.

Oh dear.. I did not know that about Clorox. I think the 65% has calcium but my CH is low only 155. Since I added my 2nd SWG a month ago I have not had to add any granular chlorine. Now my 1st SWG ins't working well as the cells need replacing only after 15 months!

I used Clorox plus a generic brand as they didn't have enough stock of Clorox! The generic brand states its 5.25%. Clorox I think it's 6% from what I googled. Yes that's what I was thinking too the chlorine is all used up but then wouldn't it become CC thus my TC would still be high? But I don't...

I would have to ask the pool guy about liquid chlorine. Yesterday I added 16 L of household bleach (about 4 gallons)- I used the pool calculator for this volume to achieve a SLAM level of 10. This morning the total chlorine according to the OTO test back down to 3.0 (as it was before I added the...

I managed to order a Taylor’s FAS DPD test kit from Amazon. Hopefully it will arrive in a week. That’s the only one kit that they can ship to Malaysia. I looked at Pool School and SLAM articles. Since my pool is an indoor pool CYA is 0 now. Do I have to increase CYA to 30 to start slamming ...

No I don’t have a UV system and my pool is 28000 gallon

Thanks for the quick replies. My pool is indoor and it is above ground concrete pool with tiles. I managed to purchase a CYA test kit from amazon and CYA is 0. Black dot is super clear at the bottom of the tube. My pool is only 15 months old. The SWG output is 45 each (not sure what units...

Hi, I am based in Kuala Lumpur, Malaysia and pool care here is very primitive and basic. I run a small swim school catering to swimming classes for mostly babies and preschoolers. My pool is 4 feet deep and size of 40 feet x 25 feet. We have a load of around 700 bodies in the pool each week...

I run a small swimming school (started 5 months ago- so very new to all this) in Malaysia where pool chemistry and pool care is at its very very basic. I have a 33000 gallon indoor pool with a SWG. I run classes mainly for babies and on our busiest day on Saturday we have about 400 bodies...