Fantine<br><br><br><br>Susie Posted July 16, 2005 Share Posted July 16, 2005 Hi,I'm having problems regulating the Ph in my new pool. In my old pool I never had a problem with this - I got it right at the start of the season and it hardly changed at all.The Ph is very high and over the past week to 10 days I've put in a total of 10 kilos of Ph Minus and although it has nearly got down to the correct level, it keeps going up again, sometimes off the scale.This is the spec of our system: 10 x 4.5 pool plus roman end; 1.2m deep for 2 metres then sloping over 4 metres then 1.8 metres deep for another 2 metres; liner pool; Pro-Matic ESC16 salt chlorinator; Zodiac Eden-pac2 heater (which hasn't yet needed to function!); sand filter; and it is covered by an abri-bas.The temperature of the water has been up to 35, usually hovering about 33/34 - last night we have left the abri fully opened to reduce the water temperature as anything over 30 could be damaging to the liner and other equipment. The temperature this morning is 31. We have very hard water (we have already had to de-scale the cell of the chlorinator after only 6 weeks or so).Reading the instructions for the chlorinator, I need to have the total alkalinity checked as this governs the speed and changeability of the Ph (it says that excessive alkalinity can lead to high Ph values) . It also says that this is done with a "suitable analytical instrument".Does any one know how I would go about getting this done in the Perigueux area, could I take a sample down to one of the pool shops? If it is too high what do I need to reduce it?Does anyone have any other advise to resolve the problem?This is my web site of the pool build:http://our-new-pool-build.mysite.wanadoo-members.co.uk/ Link to comment Share on other sites More sharing options...
Poolguy Posted July 16, 2005 Share Posted July 16, 2005 FantineYou problem is not unusual.Balancing the water chemistry depends upon a lot of factors. Without a thorough test of all the parameters its difficult to be precise about the cause of the problem. Its sure that your water is hard and requires acid dose to bring it back to neutral again, this is normal, but the amount you specify is strange. I wonder about the concentration of the acid you have been supplied.The solution might be very simple but without testing I would not like to speculate.I will be in Dordogne Wednesday to friday next week. If you want I could call in, test and give you an opinion.I don't think that the solution would take long or be difficult to find.Andrew Link to comment Share on other sites More sharing options...
Fantine<br><br><br><br>Susie Posted July 16, 2005 Author Share Posted July 16, 2005 Hi Hendo,I was hoping you'd reply!"but the amount you specify is strange" - 2 whole 5 kilo tubs of Ph minus added in reasonable doses over about 10 days, bog standard stuff off the shelf at AuchanYes, if you could come by that would be great. I'll PM you with the address etc. Link to comment Share on other sites More sharing options...
Eslier Posted July 16, 2005 Share Posted July 16, 2005 In my experience, the chemicals you buy at the hypermarchées and bricos really aren't up to much. Try getting some pH- from you nearest pool supplies shop. It might seem more expensive but it will probably work far more efficiently.Earlier in the summer I used two 1kg tubs of pH+ from our local brico and they did nothing. Off I went to the local Everblue dealer and got some good stuff and just over half a kilo did the trick ! Link to comment Share on other sites More sharing options...
Fantine<br><br><br><br>Susie Posted July 16, 2005 Author Share Posted July 16, 2005 [quote]In my experience, the chemicals you buy at the hypermarchées and bricos really aren't up to much. Try getting some pH- from you nearest pool supplies shop. It might seem more expensive but it will pro...[/quote]I've bought two tubs from Auchan (just started on the second) but actually the first tub I used to try to resolve this problem was from the pool shop, HydroSud. I've found, over the past three years of pool ownership, there is little difference bewteen the two.From the reasearch I've done, I do think that I have a Total Alkalinity problem since filling the new pool from scratch. Hendo's coming to take a look. Link to comment Share on other sites More sharing options...
Nelson Posted July 16, 2005 Share Posted July 16, 2005 elsier wrote,In my experience, the chemicals you buy at the hypermarchées and bricos really aren't up to much. Try getting some pH- from you nearest pool supplies shop. It might seem more expensive but it will probably work far more efficiently.Earlier in the summer I used two 1kg tubs of pH+ from our local brico and they did nothing. Off I went to the local Everblue dealer and got some good stuff and just over half a kilo did the trick ! It`s impossible to say weather another 1/2 kilo from your local brico would have had the same effect. Link to comment Share on other sites More sharing options...
Krill Posted July 16, 2005 Share Posted July 16, 2005 [quote]elsier wrote, In my experience, the chemicals you buy at the hypermarchées and bricos really aren't up to much. Try getting some pH- from you nearest pool supplies shop. It might seem more expensive...[/quote]After 5 years of pool ownership i am convinced that the pool companies are a complete rip off and super markets offer the same chemicals at a reduced price, just read the labels Link to comment Share on other sites More sharing options...
Opel Fruit<P><BR>Opel Fruit, Dept. 53<P> Posted July 16, 2005 Share Posted July 16, 2005 The composition of all pool chemicals is clearly printed on the labels. It is relatively easy to make direct comparisons. It is ALWAYS more cost-effective to buy from Bricos or Supermarches than "Pool" suppliers. Try reading the labels before making glib comments? Link to comment Share on other sites More sharing options...
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