The chloramine is a disinfectant that is added to water in my area and will mess with your soil herd health, if nothing else. You will have to check with Sea or another Farmer for more specifics about what harm it will cause plant but I don't think it would cause a lock out of cal. Like you, I am still working on getting my water and nute schedule dialed in. I think I tend to over fertilize and am going to back off a little on that. I have been trying different soil mixes and that throws me off a little. I treat everything, good and bad, as part of the learning experience.