The temperatures during the day have been between 50's to upper 60's. However today, for example is 78. The nights have been in the 40's. My kiddie pool temp is 57 degrees and the pond temp was 52 degrees this morning. Besides the pH, do you think I'll have to worry much about cycling and water quality changes? This is the first spring I'm bringing them back outside from the inside so I don't know what to expect. At least the water quality is starting out better outside! Thanks for the response!