Subject: pH greater than 9 in koi pond Mon Jul 02, 2012 10:17 pm
I have a 22,000 gallon koi pond which has been stable for 5 years. Today fish are swimming near surface NOT gasping for air. Water test reveals all parameters normal except pH which is higher than 9.
Fish looked absolutely fine 12 hours ago. Have applied "pH Down" at 50% of recommended dose.
One fish has now died.
All suggestions welcome.
Neville
Posts : 1457 Reputation : 1 Join date : 2010-01-17 Age : 77 Location : Krugersdorp
Subject: Re: pH greater than 9 in koi pond Tue Jul 03, 2012 9:06 am
Hi,
You should go for some big water changes urgently. If you can you should move your fish to a temp holding setup.
Best of luck.
Guest Guest
Subject: Re: pH greater than 9 in koi pond Tue Jul 03, 2012 9:35 am
ara,
At what time of the day did you test the pH?
Neli
Posts : 950 Reputation : 50 Join date : 2011-04-03 Age : 108 Location : Lusaka Zambia
Subject: Re: pH greater than 9 in koi pond Wed Jul 04, 2012 5:42 pm
Try and find out too what caused this high PH all of a sudden??? Can it be source water???
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