Q&A for How to Siphon Water

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  • Question
    Can I use a siphon hose to empty an aquarium?
    Craig Morton
    Aquarium Specialist, Aquarium Doctor Inc.
    Craig Morton is the CEO of Aquarium Doctor Inc. based in Huntington Beach California and servicing Orange County, Los Angeles County, and the Inland Empire. With over 30 years of aquarium experience, Craig specializes in creating custom aquarium designs along with aquarium installation, service, and maintenance.
    Aquarium Specialist, Aquarium Doctor Inc.
    Expert Answer
    Yes, you can use a siphon hose to siphon the water from the aquarium into a bucket.
  • Question
    What's the best way to siphon water for an aquarium?
    Craig Morton
    Aquarium Specialist, Aquarium Doctor Inc.
    Craig Morton is the CEO of Aquarium Doctor Inc. based in Huntington Beach California and servicing Orange County, Los Angeles County, and the Inland Empire. With over 30 years of aquarium experience, Craig specializes in creating custom aquarium designs along with aquarium installation, service, and maintenance.
    Aquarium Specialist, Aquarium Doctor Inc.
    Expert Answer
    The best way to siphon water for an aquarium is to use a 4-6 foot siphon hose.
  • Question
    How do I empty an aquarium into a low-level sink using a piece of polythene tubing?
    Doug Ludemann
    Professional Aquarist
    Doug Ludemann is the owner and operator of Fish Geeks, LLC, an aquarium services company based in Minneapolis, Minnesota. Doug has worked in the aquarium and fish-care industry for over 20 years, including having worked as a professional aquarist for the Minnesota Zoo and Shedd Aquarium in Chicago. He received his Bachelor of Science in Ecology, Evolution, and Behavior from the University of Minnesota.
    Professional Aquarist
    Expert Answer
    Remove the substrate and detritus from one corner of the tank, then weight your tube down in that corner using a small stone or aquarium decoration. Start your siphon using the submersion method above. The size of the tube will depend on it's circumference, so a wider tube will go faster than a smaller tube. However, you can successfully drain a tank using a small tube if you're patient.
  • Question
    How do I siphon water from a Jerry can which contains a liquid like gasoline?
    Doug Ludemann
    Professional Aquarist
    Doug Ludemann is the owner and operator of Fish Geeks, LLC, an aquarium services company based in Minneapolis, Minnesota. Doug has worked in the aquarium and fish-care industry for over 20 years, including having worked as a professional aquarist for the Minnesota Zoo and Shedd Aquarium in Chicago. He received his Bachelor of Science in Ecology, Evolution, and Behavior from the University of Minnesota.
    Professional Aquarist
    Expert Answer
    Get a tube that's long enough for you to make a loop with it while still having enough length to put the ends in the 2 respective containers. Make the loop with the tube just above the Jerry can. Then, use your mouth to pull the water into the loop. The loop will help prevent the liquid from reaching your mouth. Once the water is in the loop. Cover the end of the tube that's in your mouth with your finger and transfer it to the empty container. This should begin the siphon.
  • Question
    Will the water continue to siphon if the end of the hose is submerged in water in the lower bucket?
    Doug Ludemann
    Professional Aquarist
    Doug Ludemann is the owner and operator of Fish Geeks, LLC, an aquarium services company based in Minneapolis, Minnesota. Doug has worked in the aquarium and fish-care industry for over 20 years, including having worked as a professional aquarist for the Minnesota Zoo and Shedd Aquarium in Chicago. He received his Bachelor of Science in Ecology, Evolution, and Behavior from the University of Minnesota.
    Professional Aquarist
    Expert Answer
    Yes, it will continue to siphon until the upper container is empty or the fluids in both containers are level.
  • Question
    How do I siphon water out of a garden hose?
    Doug Ludemann
    Professional Aquarist
    Doug Ludemann is the owner and operator of Fish Geeks, LLC, an aquarium services company based in Minneapolis, Minnesota. Doug has worked in the aquarium and fish-care industry for over 20 years, including having worked as a professional aquarist for the Minnesota Zoo and Shedd Aquarium in Chicago. He received his Bachelor of Science in Ecology, Evolution, and Behavior from the University of Minnesota.
    Professional Aquarist
    Expert Answer
    You can use any of the methods described in the article above. If you don't mind getting the substance in your mouth, you could use the mouth method. However, it may be best to use the 2 hose method, especially if you're siphoning a substance you don't want to get in your mouth.
  • Question
    What is the best method for siphoning water from a pond?
    Jeff G.
    Community Answer
    As long as the outlet point is lower than the intake (pond) end of the tube, any of the methods illustrated in the article would work. Since you're dealing with a larger volume of water, you will want to use a garden hose (or something of similar width), not narrow plastic tubing! If the tube is long (and wide), it will take a lot of lung power to get suction started by sucking on it; so the garden hose + shut-off valve option is best. If time is a factor, or if you are working against gravity (i.e. you need the water to drain at a point higher than your pond), rent an electric or diesel-powered water pump, like you'd use to pump water out of a flooded basement.
  • Question
    I've tried siphoning water by sucking it. It works, but the flow is very slow. Is there a way to make it faster? Do I suck harder? Or do I use a broader hose?
    Community Answer
    The broader the hose, the faster the flow, as more water can escape. You can also check to make sure that there are no leaks or kinks in the hose, as this will slow down the movement of water. Since siphoning is powered by gravity, positioning the original container even higher than the destination container will also speed up the flow of water.
  • Question
    I need to drain a large bucket of water outside to the street. What can I do?
    Community Answer
    Put one end of a hose pipe into the bucket and secure it so it doesn't come out. Take the other end to the street and use your mouth to suck on it. This will likely require a lot of effort, as you're working with a hose long enough to reach from the bucket to the street. You may also get some water in your mouth.
  • Question
    How do I dry the inside of the tube once I've used it?
    Community Answer
    Run the vacuum cleaner and restrict the entrance down to the size of the tube with one end in the vacuum's inlet the other open to the air. Air will be sucked through the tube's end that is open to the air and will cause the water inside the tube to dry. You can also hang the tube up the air dry, so that both ends are facing downwards.
  • Question
    How to siphon water where the outlet is *higher* than the intake (pool) end of the tube.
    Community Answer
    Use a pump. Syphonic works according the laws of physics: gravity will pull the water out of the hose.
  • Question
    How I can use siphoning to transfer water from a low level to a high level?
    Community Answer
    The nature of a siphon uses gravity, so you cannot siphon from low to high. If you need to get water from a low level to a high level, you need to use an aquarium pump.
  • Question
    I am using a pump to extract water from an underground water tank, to take the water to a water storage unit. The pump works, but water is not being pumped onwards. How do I extract air from the hoses?
    Community Answer
    Your first step should be to consult the manual that came with the pump, as they all operate somewhat differently. You may also need to check the pressure gauge on the pump to insure that it is providing enough force to move the water along. Some pumps will also let you shoot the air out of the pump itself before attaching it to a container or tube.
  • Question
    Who first discovered the principle behind siphoning?
    Community Answer
    There's no one person known to have discovered it because it's so universal. It's been used since ancient Egypt. Galileo described the math behind it and theorized how it worked in the first great detail.
  • Question
    How do I siphon sea water up a beach?
    Community Answer
    You cannot. Siphoning is gravity-powered and only works if the outlet is lower than the inlet (the source). You would have to use a pump of some sort.
  • Question
    How do I print out this article with the pictures included?
    Community Answer
    If you're on a computer, you can just hit the CTRL and P buttons to bring up the printing options page, which will allow you to print the page as desired. (You can also click on File and Print.)
  • Question
    I siphoned with a long hose. Initially sucking with my mouth was hard, but then I felt a draft of air from the hose into my mouth. Then, after I stopped sucking, the siphoning started. Why did this happen?
    Community Answer
    As you began sucking the water through the tube, the water eventually hit a point where gravity could take over and pull the water through the hose. The incoming water pushed the air out of the tube, resulting in your draft of air.
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