A conventional electric water heater will come with a black wire and a red wire which are connected to the wires of the same color as described above. The ground wire is attached to the green ground screw which is in the same wiring junction box compartment which is built into the top of the water heater.
Using Sulfur to Lower Soil pH. You can make larger adjustments to your garden soil pH by using some form of sulfur. Sulfur lowers soil pH as it is broken down by bacteria in the soil and converted to sulfuric acid. Sulfur is most commonly added in the forms of aluminum sulfate, iron sulfate and elemental sulfate.
1 Ground limestone is commonly used to raise pH. Powdered sulfur or peat moss can lower pH. 2  Though not as accurate, you can also simply water soil well the night before, remove the top 2 inches and stick the probe directly into the garden soil at several points in your garden bed, averaging your results.