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.
80% of peptic ulcers are duodenal ulcers. There are many symptoms of ulcers. The most common sign of ulcers is an intermittent and irritating pain in the stomach this pain also transfers to other areas such as the shoulder blades, back, indigestion, heartburn, gas, bloating, appetite loss and nausea. A few well known symptoms of ulcers are back pain, headache, itching and choking sensation.