FAQ: It says on your label that Seachem Flourish Nitrogen™ provides nitrogen in both the nitrate form and the ammonium form. Isn't ammonia bad? Ammonium and ammonia are not the same thing. No free ammonia is released because the ammonium in Flourish Nitrogen™ is complexed and unavailable until utilized by the plants. Have more questions? Submit a request 0 Comments Please sign in to leave a comment.