A good rule of thumb is to change 20% of the water in the tank every week. If you use tap water, let it sit for two days after adding dechlorinator. This allows it to reach room temperature and let the pH settle, which helps the water not shock the fish when it is poured into the tank. The dechlorinator removes chlorine to minimize stress. You can also add a stress coat to the water, which can prevent diseases in fish. You can also buy a device that hooks to your faucet that vacuums the gravel while removing and replacing water. You don't have to wait a few days if doing it this way. Just make sure you make sure the temperature is close to your tank's temperature and that you add in a chlorine remover. You must keep your filter up and running. The filter helps keep your tank healthy and prosperous, so neglecting it can lead to cloudy water or even fish death. Read the instructions for your filter to know how to take care of it. All filters need to be examined weekly. Check them weekly for any blockages or build up. Clean as needed. When cleaning the cartridges, use tweezers to remove fish waste or other blockage. Do not rinse the cartridges, as this removes bacteria that lowers the ammonia and nitrites. The bacteria will look brown when it grows on the filter. Read the instruction manual that came with your pump to make certain it is properly installed and working as it should. The pump is important in aerating the aquarium with oxygen from the air. If it is not working properly the fish will suffer especially if the water is cloudy from waste matter.
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One-sentence summary -- Change the water. Keep your filter clean.

Place petroleum jelly (such as Vaseline) and your mint extract or oil into a glass dish or jar. Ensure that the container is microwave safe and will allow you to mix the ingredients in it easily. Use pure peppermint extract or pure peppermint essential oil, or another type of mint like spearmint if you prefer. Add this in a few drops at a time, as you will only need a small amount to scent and flavor the lip balm, and too much can create a burning sensation. Determine the quantity of ingredients to use based on the size of your container or the amount you're going to make. If you're only filling one small lip balm pot or tube, you may only need about a tablespoon. Add a little color to your lips while also hydrating them by adding tint to your lip balm. Scrape off the top of a lipstick you don't use and add it to your petroleum jelly and mint extract or oil. You can also scrape a small amount of eyeshadow, blush, or another pigmented beauty product into your lip balm to create color. Food coloring or another edible dye will also work to color the lip balm, but note that even one drop will be a very concentrated color if you're only making a small quantity of lip balm. Place your glass container with the petroleum jelly, mint extract/oil, and tint (if using) into a microwave. Heat for about two minutes, or until completely melted, then stir. Microwaves vary, so use your best judgment when heating your ingredients. It may take more or less time to melt the lip balm, but you want it to be fully liquid so it's easy to pour. Stir with a wooden chopstick, stir stick, or another utensil that will not melt in the hot liquid and that you can easily dispose of or clean afterwards. Use oven mitts to remove the container from the microwave, and be very careful with the hot contents. Children should have an adult complete this step.
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One-sentence summary -- Scoop petroleum jelly into a microwave safe container. Add tint with an old lipstick if desired. Microwave the mixture and stir.

There are many options for pranks and a lot of them involve physical humor. Come up with an idea that is funny and will keep your friends laughing for days. For example, you could try one of these pranks: Put toothpaste on your friend's fingers, then tickle their face. You could also use peanut butter or whipped cream. Put shaving cream into his/her shoes. If someone opens their mouth to snore, squirt sour spray! Draw on them with a black (not permanent) marker. Make a silly design on their face or arms. Anything you can access without waking them up. Draw a mustache and a beard. Just make sure it is the kind of marker that will rub off easily. Prank calls are a great way to create hilarious memories with your friends. Just make sure you don't call anyone that will be offended by your prank call. You should only call people who will appreciate the humor since it's all in good fun. Try calling someone and asking someone if their refrigerator is running. When they say yes, tell them that they better go catch it! You could also make prank calls using the cell phone of a person who already fell asleep at your sleepover. Just make sure you don't do anything that could get them in trouble. Pranks that scare someone for a moment can be hilarious. But be careful to keep the joke lighthearted. You want the people that you prank to be able to realize it is a joke right away, rather than being legitimately scared. For example, you could try one of these pranks: Put makeup on your face to make yourself look like an insane clown. Then wake up your friends! Hide in the shower behind the shower curtain and pop out when someone comes in to use the bathroom. Just make sure to do it before they start using the bathroom to avoid any awkwardness. Sometimes people do funny things in their sleep and it can be really funny to record it or to talk about it the next morning. But, even if no one does anything funny in their sleep, you can always pretend they did as another prank! Tell someone they said funny stuff in their sleep. For example, you could tell your friend that while he was sleeping he said, "I love the lunch-lady". If someone is a terrible sleep talker, record the funny things they say.
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One-sentence summary --
Try a funny prank. Make prank phone calls. Try a scary prank. Try sleep-related pranks.