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I posted recently in Algae Prevention and treatment and wondered if a chemist could help me understand (in layman terms, if possible) what is happening in my pool. I don't understand how the water can be so warm and be clear with the total lack of chlorine, this appears to defy all I thought I...

Hi Marty, thanks for the reply. Last slammed the pool in Oct 2019, before closing - no chlorine added since then. I was confused by the numbers and how the water appeared so clear and zero apparent wildlife. The test readings are possibly wrong as my La Motte test reagents are 6 months out of...

Not sure if this is the best forum to post in but here it is : Due to Covid we have just been able to return to south of France to our second home after closing the pool mid October 2019 but we are only here until start of November (we usually leave mid October and the pool has to be closed...

So I have read up again on the Slamming instructions and last night I had the following measurements: 6/30/16 10pm 0 (FC), 0.3 (CC), 7.4 (PH), 126 (ALC), 85 (CYA) so I added 34L Bleach at 22:15pm looking for Slam Fcl of 33 The readings this morning 7/1/16 9:15am are 8.8 (FC), 0.5 (CC), 74...

The tabs were dichlor. I had to use them as I ran out of bleach. I believe I have slammed the pool three times as shown on the chart. So far I have used 130 litres of 9.6% bleach but perhaps I am doing it wrong. The morning after slamming I always seem to be at a very low FC.

No I didn't buy it I found it on TFP search for "Jesse's Graphical Pool Testing Log" He has obviously put a lot of effort into generating this excel spreadsheet and it works very well.

Sorry I was trying to get the file to an acceptable size for uploading and forgot that a zip file would be unwelcome. I have now scanned the results. I am using a La Motte Color Q Pro7

Hi, I bought a sliding pool enclosure last summer and the pool was covered from mid October until mid May. On opening in May the water was clear and at least 8°C higher than previous years, but the walls and basin were covered in green algae. When I started the pool the readings were : FCL=0.5...

Hi, I have a pool in France and have been sold some DE by an online pool shop. This product has given me no end of problems. Please can anyone advise me if the following product is suitable for pool filter use? CECA ARKEMA Clarcel DIT2R, CAS NO. 68855-54-9. On the bag it says "Conforms to...

Hi Joel, It is a semi circular cover which is about 115 cm above the coping stones at its apex. It is opaque and made out of Lexan Thermoclear 2 UV polycarbonate sheet. Bob

Hi, I am new to this forum and would like some advise on how best to winterise the pool. The pool is situated in the south of France in a village roughly level with Toulouse. The winters do not usually have more than a couple of days of light snow. This is the fist winter after six years that...