In one sentence, describe what the following article is about: A filter is a vital piece of equipment to help keep your goldfish alive. The filter you’ll need depends on the size of your tank, as filters operate according to a flow rate which will correspond with the amount of water your tank holds.  Ensure you get a filter with the correct flow rate, and choose between an external or internal filter.  If you can’t match your tank’s capacity to a the exact flow rated filter, go overboard.  For instance, if you have a 20 gallon (75.7 L) tank, shoot for a filter rated for 40 gallons (151.4 L). External filters sit on an outside wall of the tank or within the tank’s lid. Internal filters are submerged within the tank.  Either type of filter can work for a goldfish tank. Lean towards opting for an external filter, as they have a greater capacity to store filtration materials, can clean water more thoroughly, and will require less maintenance. Your goldfish requires properly conditioned water to neutralize commonly occurring chlorine and chloramine.  Feel free to use tap water, for instance, but add conditioner from a pet supplies store to make it safe for your goldfish to live in.  Make sure the water has the right pH level too. For goldfish, ideal pH levels are a slightly alkaline 7.2-7.6 pH. Use a pH test kit to test your goldfish’s water regularly, and adjust the pH if necessary with additives available at the pet store. Do not place the tank near a window or any heating or cooling source.  Do not allow sunlight to hit the tank directly.  Also be sure the tank is set on something flat and extremely sturdy.  Though you will likely need to set your fish tank near an outlet, don’t allow electrical cords dangle over your fish tank. An electrical shock could absolutely fry your goldfish, and be dangerous for you as well. Similarly, be sure that no cord is pulling against the side of the tank or the base that the tank is resting upon. Place the tank in a location it will not be jostled. You probably don’t need a heater to maintain a temperature in this range, as it almost identical to the range commonly maintained in human dwellings. If you live in a particularly hot or cold climate, ensure that seasonal or daily changes in temperature do not put your goldfish at risk.
Summary: Use a filtration system. Add safe, clean, and balanced water. Place the goldfish’s tank somewhere safe and sensible. Make sure the water temperature stays between 60 °F (16 °C) and 72 °F (22 °C).

You can also make a fireball using a cotton shirt as a base, which will make a bigger flame. First, cut the cotton T-shirt into a 2 x 4.7 inch(5 x 12 cm) strip. Make sure that you are using a T-shirt that is 100% cotton. If you use a shirt that is only partly cotton, it will melt instead of burn. After you cut your strip, roll it to create a ball. Try not to roll it too tightly, or else the rubbing alcohol will have a hard time soaking into the fabric. Also try to tuck in any loose ends or edges to make a more regular ball. Keep holding the cloth ball in your hand after rolling so that it doesn’t unravel. Thread a large, sharp needle with cotton string. Then insert the needle into the cloth ball, piercing it all the way through the ball from one side to the other.  Make sure that the string you are using is 100% cotton. Hold the ball while you pierce it with the needle to make sure it stays together. After you stitch through the cloth ball, tie the cotton string at both ends. Stitching through the ball helps the cloth ball to keep its shape. Don’t break off the string, as you will keep using it. After you have stitched through the middle of the ball, take the cloth thread and wind it around the ball to help hold it together and keep its spherical shape. After you have wound the thread around the ball, insert the needle back into the ball and pull the string through the other side. Then cut the string and knot it so that it stays. Pour around ½ cup (125 ml) of rubbing alcohol into a bowl large enough to hold the cloth ball. Then take the cloth ball and place it in the rubbing alcohol, allowing it to soak for a few seconds. Use a spoon or other object to turn the ball over in the alcohol so that both sides absorb some of the rubbing alcohol. Do not get any rubbing alcohol on your hands or clothes. After you have soaked the cloth ball for about three seconds, use a pair of tongs or tweezers to transfer the ball out from the bowl with the alcohol to a new, clean bowl. Make the transfer after only a few seconds so that the cloth ball doesn’t soak for too long. If the ball absorbs too much rubbing alcohol, it will become soaked and start dripping. This can be dangerous when you light it on fire.
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One-sentence summary -- Cut a shirt into a strip. Roll the strip of shirt into a ball. Fasten the ball with thread. Tie the string at both ends. Wrap thread around the ball. Secure the thread. Place the cloth ball in a bowl of rubbing alcohol. Transfer the cloth ball to a clean bowl.

Problem: Article: You can request reconsideration of an immigrant visa application within one year after being refused. You do not have to complete a new application or pay another fee. However, if you wait more than a year, then you will. Reconsideration is not available if your nonimmigrant visa application was rejected. Instead, you would need to submit a new application. You might receive what is called a “soft refusal.” This is different from a “hard denial.” Instead, a “soft refusal” is really a request for additional information. For example, you may need to provide the following:  tax information or documents confirmation that you received a job offer affidavit of financial support proof of local employment court records or police certificates If you receive a hard denial, then you will need to present either a Motion to Reconsider or a Motion to Reopen in order to proceed. A motion is a professional document, and you will need a lawyer’s help to draft it. You should move quickly. You typically must file this motion within 30 days of the denial.  You should find a lawyer who practices in the immigration field and who has experience dealing with reconsideration of U.S. immigrant visa applications. A motion is not appropriate in all situations. Your lawyer should analyze your case to determine whether reconsideration is appropriate. Your lawyer will draft the motion and submit it to the United States Citizenship and Immigration Services (USCIS) or other appropriate office. You should receive a decision on any motion you file within 90 days of submitting it. However, given how busy USCIS is, you might need to wait longer. Stay in contact with your lawyer to discuss how the case is proceeding and whether there is anything else that you need to do. If you lose your motion to reopen or motion to reconsider, then you should talk with your lawyer about what next steps to take. You may be able to bring another appeal to the Administrative Appeals Office at USCIS.
Summary:
Avoid delay. Provide additional information, if necessary. Hire a lawyer. Submit your motion. Consider next steps.