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 most-common symptoms of GERD in adults are heartburn and regurgitation. Less-common symptoms include pain with swallowing / sore throat, increased salivation (also known as water brash), nausea, chest pain, and coughing. GERD sometimes causes injury of the esophagus.