Hello, I'm just getting started with aquaculture and I am in need of some help. I've recently had issues with my ammonia levels in my first pond. I'm raising only a northern strain of Largemouth Bass and was wondering if anyone knows of the highest amount of Nh3-N that would be sub lethal. I'm currently at a 1.19 Nh3-N and have defiantly seen a marked decrease in deaths but I doubt I can get the levels to near zero as my water exchange is low at the present weather conditions. Any help is greatly appreciated.