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Dip the brush in the oil and swipe it across the outside of each hoof. Cover the entire surface, including up 12in (1.3cm) into the hairline. Lift your horse's foot and apply a coating to the underside of the hoof as well, covering the heel, frog, and sole. If you don't have a hoof brush, you can also use a 1in (2.5cm) wide paint brush. Be sure to clean the top of your horse's hooves and clean out the soles with a pick before applying the oil. Dirt and grime can interfere with the oil absorbing, and it can be very messy. If you mixed various ingredients to make your oil, be sure to shake the container well before you dip your brush in. Once you've applied the oil, don't let it out to pasture or back in its stall right away. Give the oil some time to dry and absorb into the hoof. This should take about 30 minutes. For an intensive hoof treatment, use the oil every single day for a maximum of 7 days. Reduce the frequency to about 3 times per week after that if your horse's hooves are still dry. For the most part, your horse shouldn't need to have hoof oil applied regularly because the hoof maintains the proper moisture levels naturally. However, if it has a tendency to get dry or cracked hooves, you can apply the oil once per week to help maintain the proper moisture levels. Keep the container tightly closed whenever you are not using the oil. If ever it starts to smell rancid, dispose of it and make a new mixture. Try writing the date you made it somewhere on the container to help you determine when to make a new batch. If you are using an unmixed oil, check the label on the container to find out its shelf life.

summary: Use a hoof brush to apply a light coat of hoof oil to clean, dry hooves. Keep your horse in a clean, dry place while the oil absorbs. Apply the oil to extremely dry, cracked hooves every day for one week. Use the oil once per week to prevent splits and cracks in the hooves. Store the oil in a cool, dry place for up to 6 months.

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Double-click the iWork document that you want to protect to do so. Apple's iWork suite of software includes the following programs: Pages - Used for rich text documents; similar to Microsoft Word. Numbers - Used for spreadsheets; similar to Microsoft Excel. Keynote - Used for slide presentations; similar to Microsoft PowerPoint. It's a menu item in the top-left corner of your Mac's screen. Clicking it will prompt a drop-down menu. This option is near the bottom of the File drop-down menu. Doing so opens a pop-up window. Type the password that you want to use into the "Password" text box at the top of the pop-up window. Re-type the password into the "Verify" text box. This will ensure that the password was correctly entered the first time. If you want to use a hint for the password in case you forget it, type the hint into the "Password Hint" text box. Do not use any part of the password in the hint. If you see a checkbox that says "Remember this password in my keychain" at the bottom of the window, make sure that the box is unchecked. If your Mac has a Touch Bar, you'll see an "Open with Touch ID" checkbox as well. You can check or uncheck this option as you please. It's a blue button at the bottom of the window. Doing so will lock the document with your selected password; when you try to open the document in the future, you'll be prompted to enter the password before you can proceed. If you send the document to another Mac user, they'll also have to know the password in order to open the document.

summary: Open an iWork document. Click File. Click Set Password. Enter a password. Re-enter the password. Add a hint if you like. Turn off keychain if necessary. Click Set Password.

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Measure the average depth of your pool. Next, multiply your average depth by the width and the length of your pool in feet, then multiply that number by 7.5, the number of gallons in a cubic foot. If you don't know the average depth of your pool, add the depth of the shallow end and the depth of the deep end and divide by 2 The formula for volume is Average Depth x Width x Length x 7.5 = Volume in gallons Salt systems can vary widely in price and features, but the basics of what you need are the salt generator, which uses electricity to break down the salt into chlorine, and a control unit, which allows you to monitor the system. Make sure you purchase a system for an above-ground pool. You can purchase a saltwater generator at any pool supply store. The system will cost between $150-$700 USD depending on the size you need and the features you choose. The system you purchase should be rated for a pool about 10% larger than the one you own. This will keep your system from having to operate at full capacity all the time. The instructions on your system will tell you how much salt to use in your water, and it will be based on the volume of your pool. Saltwater pools are usually a salinity of about 3500 ppm. Wait a full day before installing the saltwater system. You can purchase pool-grade salt from a pool supply company. A 40 pounds (18kg) bag of salt usually costs about $5 USD. Make sure you turn off the power to the pool by flipping the circuit breaker on your electrical panel. The specific installation instructions will vary depending on the model you chose, but it should be the last piece of equipment attached to the pool pipe before the water returns to the pool. Since you will be working with electricity and water, you may want to have this step performed professionally if you're not comfortable with electrical equipment. The control unit is wired to the saltwater generator, allowing you to easily adjust the levels of salt in your pool. Read the instruction manual that came with your system to determine exactly how to install the control panel. Some models are as simple as mounting the panel on a nearby wall or fence, while others may require you to hook up the wiring yourself. When metal is submerged in saltwater, it creates an electrical charge similar to a battery. This process will corrode the metal in your pool. Because zinc corrodes faster than other metals, you can place a piece of zinc known as a sacrificial zinc anode in your pool to slow the corrosion of the other metals. You will need to replace your sacrificial zinc anode 1-2 times a year, or when the anode is about half of its original size.
summary: Measure the volume of your pool if you don't know it. Purchase a saltwater generator and a control unit. Choose a larger system than you need. Add salt to your pool and let it sit for 24 hours. Install the saltwater generator into your pool's existing plumbing. Install the control unit somewhere close by your pool. Add a sacrificial zinc anode to prevent galvanic corrosion.