Q: After you’ve positioned your equipment and decorations, fill the tank the rest of the way with water. Leave some space at the top instead of filling it up to the brim. That way, you won’t cause the water to spill over if you have to reach for something inside. When the tank is full, turn on your equipment. Give them two or three hours, then check to make sure you see bubbles and circulating water. Use a thermometer to double check that the heater is working and calibrated properly. Dechlorinators are inexpensive chemicals that remove chlorine and chloramine from water. Small levels of these are almost always found in all tap water and are harmful for fish. You can find a dechlorinator at the pet store. Typically, you’ll add a drop or two of dechlorinator per gallon of water, but check your product’s label for specific instructions. the tank. Before adding your guppies, you must cycle the tank, or develop the beneficial bacteria that help maintain water quality. Add four to five drops of pure ammonia or ammonia labeled for cycling to the tank. Wait two days, then test the water; you want to see ammonia levels at three parts per million.  Continue to test the water every other day and add more ammonia if necessary. After a week, start testing for nitrites, which will indicate bacteria are starting to grow and consume the ammonia. Within a few more days, you should see ammonia and nitrite levels drop, and nitrate levels rise and plateau. At this stage, you’ve completed your first nitrogen cycle. It’s best to do a fishless cycle so that no fish have to suffer through ammonia exposure.
A: Fill the tank with water. Turn on the filter, heater, and air pump. Dechlorinate the water. Cycle

Article: Catfish like plecos often fight each other when placed in the same aquarium. Some even fight to the death, so it’s best to keep only one pleco in an aquarium at a time. Plecos generally do well in a tank with most other types of fish, except for piranhas and oscars. Plecos can grow up to 18 inches (46 cm) long! This means you’ll need an aquarium larger than 100 gallons (380 L). You can choose a smaller species of pleco, like the Golden nugget, Zebra, Clown, or Bristlenose pleco, if you have a tank smaller than 100 gallons (380 L). For example, a Clown pleco can live comfortable in a 20-gallon tank. Plecos are nocturnal, so they need darkness to signal it’s time to move around and feed. Therefore, it’s not ideal to keep your aquarium lights on constantly. Set a timer on your aquarium lights to replicate natural light cycles (meaning that the lights are on during the day and off at night). Hiding places help your pleco feel secure and safe. They will spend much of their time hiding, especially during the day. Put small tunnels or caves designed especially for fish in the aquarium, or use sections of PVC pipe. Avoid filling the tank all the way to the top, as plecos come to the surface to gulp air in order to improve their buoyancy. If the tank is completely filled, they may not be able to get the air they desire, or they may bump their snout on the lid and injure themselves. Plecos are able to jump out of the water, and if the tank has a loose lid they may be able to escape, potentially injuring or killing themselves. For this reason,  you need to make sure the lid on your tank is secure.
Question: What is a summary of what this article is about?
Keep only one pleco in an aquarium. Provide them with plenty of room. Set up a regular light schedule. Place hiding spots in the tank. Don’t fill the tank all the way up. Ensure the lid on the tank is secure.

Q: While your popcorn garland might seem like the finishing touch to your Christmas tree, it’s actually easier to hang it when there aren’t ornaments in the way. You should add your lights before the garland, though. The best way to hang popcorn strings on your tree is to softly drape them over the branches rather than firmly stuffing them in gaps. Start at the top and carefully work your way down.  For a formal look, make sure to drape your popcorn strings in even, uniform loops. For a more casual look, allow the popcorn strings to drape unevenly. If you want your popcorn garland to stand out on your tree, consider doubling up the strings and draping them together over the branches. Once the popcorn strings are in place, you can hang your ornaments on the tree. However, you should take care when placing them among the garlands because you don’t want any large, heavy ornaments to rest on the popcorn and possibly break it.
A:
Add the garland after the tree's lights. Place the garland on the tree. Add ornaments.