HOW TO CHANGE MY POND PH LOWER?

HOW DO I MAKE MY POND PH LOWER FROM 8 TO 7 ?

I HAVE 10 KOIS AND 20 GOLDFISH.

MY TAP WATER IS 8.5HOW TO CHANGE MY POND PH LOWER?
You can buy a PH buffer from your local aquarist shop which will either lower your ph or set it to a certain PH which is best for your goldfish and koi,i have a reef tank and i use waterlifes 8.3 buffer works well and im sure they sell one for ponds, its not to expensive either and is just like a type of powder you dissolve into usually a pint of pond water.



Try these websites:



http://www.waterlife.co.uk/waterlife/72buffer.htm



http://www.ntlabs.co.uk/product_details.php?product_id=31HOW TO CHANGE MY POND PH LOWER?
Try adding some natural lemon juice. I am not sure about the how the health of fish will affect.
You should fill your pond and let the water set a day or two and do nothing to change your ph .The ph will go down on its own after a few days with the fish excreations I hope you have atleast a 300 gal pond for the number of fish you are putting in it other wise you are way over crowded and most certainly your fish will start dying due to high nitrate and amonia levels.