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.
When you bring your fish home you should always first float the bag your tank water to balance the water temperatures between the bag and tank water. This usually takes 15-20 min and is best determined by touch testing the two waters. After five or ten minutes you will want to add some of the tank water to the bag to acclimate your fish to the pH level of your tank. ammonia, bacteria, basics, chemistry, cycling, nitrates, nitrites.