Did a trip to Petsmart to get our water tested. It's high in ammonia. I calculated the pond at 268 gals when it's at 10 inches. We drained it this low starting out at 13 inches. This should be a 25% water change. We bought an ammonia test kit which is showing the ammonia is still way high. Need to work at this. Dinner was crab cakes and butternut squash.