Then you do not toast the element if you flip the switch by accident. Then once the heater is filled, turn on the circuit breaker and then flip the switch as needed. See this pic of the circuit breaker on my T2499. Let us know if there is any wording at all on that switch. Good luck.
To lower the pH level of soil and make it more acidic, vinegar can be applied by hand or using an irrigation system. For a basic treatment, a cup of vinegar can be mixed with a gallon of water and poured over soil with a watering can.
The amount of lime you must add to correct pH depends not only on your soil type but also on its initial pH. For example, applying 5 pounds 464of limestone per 100 square feet will raise the pH of a sandy loam soil from 6.0 to 6.5. It would take 10 pounds per 100 square feet to make the same change in silty loam soil.