I checked the pond today - 7 days after application. Prior to the addition of the lime the water clarity was about 1 inch. I was pleased to see it increase to 7 inches today. This is the clearest that it has been. I also noticed fish feeding on the surface of the water. I threw a couple crickets in the water and they disappeared after a few kicks. While I have seen tons of gambusia on the surface I have not seen any signs of the CNB or FHM since they were put in, so I was happy to see a bit of activity. How long should I wait to test again and consider adding alum or gypsum?