Pond Boss Forums MANAGING AN EXISTING POND Fertilization A question about Alkalinity and PH

I don't fertilize but I do control our water temp as best I can with aeration. I have seen what you are describing with water temp rise. I am guessing you do not have aeration at all.

You may have had soluble suspended acidic material in the water column too. As it reacts with the lime it will coagulate or stick together making the molecule larger and heavy. They will titrate out and sink.

Watch what happens when you get some good wind action or cool snap. Nature is a beautiful thing you just need to observer her. My bet is that your PH rise has locked up acids in your fertilizer and dropped them to the bottom of your pond as balanced food. One good rain and sunny day and you may change your thoughts on water clarity.