An arrhythmia is any disorder of your heart rate or rhythm. It means that your heart beats too quickly, too slowly, or with an irregular pattern. Most arrhythmias result from problems in the electrical system of the heart. If your arrhythmia is serious, you may need a cardiac pacemaker or an implantable cardioverter defibrillator (ICD). They are devices that are implanted in your chest or abdomen. A pacemaker helps control abnormal heart rhythms.
Generally speaking, the numbers refer to the parentages of Nitrogen, Phosphorus and Potassium, by weight, listed in this exact order and contained in the fertilizer. These numbers stand for the percentages contained within a specific package.
What to use. A complete fertilizer that supplies nitrogen, phosphorus, and potassium, such as 10-8- 6, is often suggested. This formula can vary somewhat, but usually the nitrogen content (the first number) will be higher than the phosphorus (second number) or potassium (final number). It is always best to have a reliable soil test run before fertilizing, as much of our soil already has sufficient amounts of phosphorus and needs no extra.