Overfeeding is the number-one cause of high nitrate levels in aquariums. Overfed fish produce much more waste than normal, and when more food is given than they can take in, the uneaten food rots and produces even more wastes. Keeping too many fish in a tank also leads to problems with accumulated wastes.
Symptoms Caused By Esophageal Ulcer. One classic symptom is a dull or burning pain. It is common with all forms of peptic ulcers. The affected person may feel the pain radiating within the areas starting from the navel up to the breastbone.
The main symptoms of esophagitis are: Pain in the chest (behind the breastbone) or throat. The pain can be burning, heavy or sharp. If acid reflux is the cause of esophagitis, the pain may be worse after meals or when you lie flat. Pain from esophagitis may be constant or may come and go.