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.
Add 1-2 drops per 4 gallons of tank water. These pH products contain large amounts of phosphates which your bacteria need to grow. This small amount will not affect the pH of the tank and will supply all the phosphate needed. Lots of my cycle stopped/stalled posts can be attributed to phosphate deficiency.