Transcript of Heart Disease and the Excretory System. Heart Disease and the excretory Heart disease slows the oxygen flowing throughout the body. So oxygen moves slower to the excretory system.
The most likely causes of a shift in pH are: 1  Something in the water source buffering the water. 2  Something in the tank buffering the water. 3  or Something you are adding to the tank.
Symptoms of High pH in an Aquarium. Fish of all shapes and sizes require clean, neutral water to thrive. Potential hydrogen, often called pH, is a measurement of acidity. A substance with a measurement of 0 to 6.9 pH is acidic, while a pH of 7.1 to 14 is considered alkaline. Most aquarium fish thrive in pure water, which is a neutral pH of 7. A tank with high pH, meaning it's very alkaline, is dangerous for fish and their habitat. If your fish are showing symptoms of illness, check your pH. One of the most obvious signs that your aquarium's pH is too high is that the fish are behaving unusually.