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.
Azaleas are acid-loving plants, so optimum pH levels in the soils should be between 5.5 and 6.5. A pound and a half of sulfur per 100 square feet can lower the pH by half a point. Sandy soils need less (.5 lbs. / 100 sq. ft.) and heavy clays need more (2.5 lbs. / 100 sq. ft.). One suggestion is to use 2 lbs.