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.
Adding ground lime to your soil will make it more alkaline and aluminium sulfate or sulfur will help to make your soil more acidic. If your soil is low in nutrients (like sandy soil), try supply it with organic matter such as compost and manure to enrich the soil and improve its texture. Use organic mulches such as straw, dried grass clippings and deciduous leaves.