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.
Readings below 7.0 are acidic, readings above 7.0 are basic and 7.0 on the dot is called neutral. This logarithmic scale is used to measure everything from battery acid to lye. Most aquarium fish live in water with a pH range between 6.5 and 8.0.Individual species thrive best in water with a pH close to their natural environment. This can prove to be challenging if your fish is adapted to the acidic water of a Malaysian rice paddy but the water pumped into your house is basic.eadings below 7.0 are acidic, readings above 7.0 are basic and 7.0 on the dot is called neutral. This logarithmic scale is used to measure everything from battery acid to lye. Most aquarium fish live in water with a pH range between 6.5 and 8.0.