Bugsy Posted August 14, 2013 Share Posted August 14, 2013 My 6.5 metre round above-ground pool has been perfect this year. Crystal clear and chemically pretty-much spot on.Removed the cover two days ago and it has turned a brilliant bright green, literally overnight.I've tried a choc treatment and anti-algae treatment and it hasn't made the slightest difference.Interestingly, my neighbours pool has done almost exactly the same, weird or what !!!My only thought is that the massive combining going on all around us has, in some way affected it.Any advice welcome. Link to comment Share on other sites More sharing options...
sid Posted August 14, 2013 Share Posted August 14, 2013 Isn't this something to do with outside temperature and algae development? We don't have a pool but I've heard other people talk about sudden overnight "green-ups". I'm sure the experts will be along shortly. Link to comment Share on other sites More sharing options...
Théière Posted August 14, 2013 Share Posted August 14, 2013 Bugsy, we usually get 2 algae blooms each year, one in spring and the other in early August and others reported to me that this year it arrived about two weeks early, not for you with a cover on though but you took the cover off and overnight, green. Actually that's quite slow usually turns in a couple of hours.With a cover on I wouldn't have expected the combining to allow the dirt etc into the pool.Chemically pretty-much spot on, NOT or it wouldn't have gone green. You may well have had a nascent algae which you couldn't see and you introduced the magic daylight and algae showed itself.Roughly 40m3 what are the water figures pH, chlor free, chlor total, CYA, alk and are you using galets or eau de javel? how are you testing the water? Same old questions I'm afraid because the message doesn't change. Link to comment Share on other sites More sharing options...
YCCMB Posted August 14, 2013 Share Posted August 14, 2013 Living in the midst of a working farm, my pool is at the daily mercy of farming"stuff" and the constant dust from 14-year-olds playing at being Louis Hamilton in tractors and diggers. Nevertheless my algae seems to behave in much the way Theiere describes. This year's has been and gone, dismissed quickly with a few glugs of Javel (in the pool, not my drink of choice) but I can usually see it coming, as a quick look out of the bedroom window shows me whether the colour of the water is "turning" and allows me to catch it quickly. I wish my eyesight and colour recognition was as reliable when using test solutions to measure the chlor and stuff, because I usually end up using several different test kits. To ensure that what I see is what I think I see. Link to comment Share on other sites More sharing options...
Théière Posted August 14, 2013 Share Posted August 14, 2013 Well it's the 3rd email/post from people today suffering from the "green" Decent testers are worth their money as it saves the hassle and expense of chemicals if as you say you can spot these things. Some of these "cheap testers" really are hard to fathom the colours, customers show me their testers and I look hard and still can't work out what I am actually supposed to be reading.There are colour matching test kits that actually work, I still have mine in case I turn up and batteries have gone flat, that is again not cheap but at least I can read the correct colour depth from the wheel. Link to comment Share on other sites More sharing options...
mogs Posted August 14, 2013 Share Posted August 14, 2013 [quote user="Théière"]Well it's the 3rd email/post from people today suffering from the "green" Decent testers are worth their money as it saves the hassle and expense of chemicals if as you say you can spot these things. Some of these "cheap testers" really are hard to fathom the colours, customers show me their testers and I look hard and still can't work out what I am actually supposed to be reading.There are colour matching test kits that actually work, I still have mine in case I turn up and batteries have gone flat, that is again not cheap but at least I can read the correct colour depth from the wheel. [/quote]Can you recommend a decent test kit please? Link to comment Share on other sites More sharing options...
Théière Posted August 14, 2013 Share Posted August 14, 2013 Mogs, I have sent you a PM. Link to comment Share on other sites More sharing options...
retread Posted August 14, 2013 Share Posted August 14, 2013 There was a tread on a totally different forum that claimed that Algae bloom was also induced by thunder and lightning , but could the Donner und blitzen be a symptom for hot weather and increased pool use, no of days without a cover and increased UV?Mind you the chap had a thousand and one scientific reasons why the lightning was causing the problem. All down to Ozone, Excess nitrates caused by the lightning etc seemed plausible but you know me easily confused :-) Link to comment Share on other sites More sharing options...
Théière Posted August 14, 2013 Share Posted August 14, 2013 The composition of air is 78% nitrogen 21% oxygen 1% other. with lightning it can cause nitrogen to combine with water into nitrates and ammonia both of which can be food for living organisms and cause depletion of chlorine deposits in pools so auto dosing systems be they salt or direct will be ok if they are on but other manual methods are not so good if you don't add more chlorine following a rainstorm.The algae blooms are a direct result of too little chlorine everything else is a side issue. Link to comment Share on other sites More sharing options...
Bugsy Posted August 15, 2013 Author Share Posted August 15, 2013 Spot on 'Theiere', it just took me by surprise.Water now returning slowly back to clear having crept up on it with a big dose of 'choc' and a big stick. LOLThanks for the advice. Link to comment Share on other sites More sharing options...
Théière Posted August 15, 2013 Share Posted August 15, 2013 Bugsy, choc is a process not a product. the product is just a slightly quicker dissolving version (due to surface area) of the larger galets. Eau de javel being a liquid will mix in and begin work so much faster and won't raise the CYA figure. Link to comment Share on other sites More sharing options...
Bugsy Posted August 15, 2013 Author Share Posted August 15, 2013 Yes, sorry thats what I did.I used Eau de Javel.I think I need some 'floc' now to clear the cloudiness. Link to comment Share on other sites More sharing options...
Théière Posted August 15, 2013 Share Posted August 15, 2013 [quote user="Bugsy"]Yes, sorry thats what I did. I used Eau de Javel. I think I need some 'floc' now to clear the cloudiness.[/quote]Oh good Bugsy, you need some patience but maybe some floc and a skimmer soc can help too. Link to comment Share on other sites More sharing options...
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