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.
HOW TO USE YOUR SOIL pH METER. 1. Remove the top 2 of the surface soil. Break up and crumble the soil underneath to a depth of 5. Remove any stones or organic debris such as leaves & twigs because they can affect the final result.