How to Keep Aquarium Decorations From Floating

Aquariums can be a fun and rewarding hobby. They provide hours of viewing pleasure, and they help to keep your fish healthy and happy. However, many new aquarists find that their aquarium decorations tend to float around the tank rather than stay put on the bottom where they belong. They need to know how to keep aquarium decorations from floating. It is dangerous to the fish, makes it harder to clean the tank, and can decrease the beauty of your fish’s home.

Aquarium Decorations

When you are just starting with your aquarium, there are certain things that you need to know. One of these is how to keep aquarium decorations from floating. In addition, there are several things that you may not have known about the care of an aquarium that would be here. First of all, aquariums are not meant to have sharp objects in them. This is because sharp edges can hurt the scaly skin of your fish.

Second, you need to make sure that all of your decorations are stable enough to stay at the bottom of the tank where they must sit. There are several different items that you can use for decorations that will not cause any danger to your fish.

For instance, a clay flower pot can make a wonderful hiding place for shy fish. Just be sure to drill several small holes in the bottom of it so that water can still reach the roots of plants inside of it should you decide to put some in there.

Reasons to Keep Aquarium Decorations From Floating

It is dangerous to the fish – Sharp objects and decorations that float freely around the tank can injure your fish. This will greatly decrease their life span and may even cause diseases to be passed on from one fish to another.

Keep Aquarium Decorations From Floating

It makes it harder to clean the tank – If you have a fish that doesn’t mind being picked up by its tail, some decorations can be removed from the tank and cleaned thoroughly. However, if your decorations tend to float rather than rest on the bottom of the tank, they will not be so easy to remove from there.

It decreases the beauty of your tank – Not only will some aquarium decorations float rather than stay on the bottom where they belong, but if you have too many of them, it can decrease the natural beauty that a fish tank is supposed to provide.

Steps on How to Keep Aquarium Decorations From Floating

Step 1:

Keeping your aquarium decorations from floating is a simple process. All you need to do is find decorations that will stay on the bottom of the tank when they are positioned there. Several items can be used for this purpose, such as rocks or marbles.

Aquarium Decoration Stay on Bottom

Step 2:

If you still wish to use some objects that float, such as flower pots, you can weigh them down, so they sit on the bottom of the tank. Pour enough sand or gravel inside them to keep them from floating. You can also purchase objects specifically designed for this purpose at your local pet store.

There are many different decorations that can be used in an aquarium, but it is important for you to know how to keep aquarium decorations from floating. This is especially true if you have fish that like to get themselves into difficult positions, such as upside-down or in containers.

Step 3:

If you have decorations that cannot be weighted down, work to keep your tank clean. Some smaller objects can still be picked up with a net if you get them early enough.

Keep Tank Clean

Step 4:

You should also monitor the number of objects in your tank that float freely. If there are too many of these floating around, your fish tank will lose its natural beauty and may even become hazardous to the health of your fish. It is easy for you to keep aquarium decorations from floating simply. Just be sure that you have plenty of items on the bottom at all times.

You can check it to Install Floating Shelves on Plaster Walls.

Tips and Warnings


  • Be sure to keep sharp objects out of your fish tank! If a decoration does have a sharp edge, it should not be used in an aquarium.
  • It’s best to use materials that will stay on the bottom at all times, such as rocks and marbles. There are even items made specifically for this purpose if you can’t think of any other options.
  • If your decorations are too heavy to have on the bottom, you can always remove them from the tank and thoroughly clean them with hot water every week or so.


  • If any of your fish are very large, they may not be content with only a small space in an aquarium. You may need to purchase a larger tank if you notice this behavior.
  • If your decorations are very heavy, be careful when cleaning them or adding anything else to the top of them. It will likely cause them to fall over and break!
  • If the leaves of plants in your tank float rather than rest on the bottom, they may die, and you’ll need to replace them.
  • Aquariums with fish that like to swim upside-down or into containers can be dangerous if too many decorations are floating around. Some fish will try to eat these as well, which could lead to death.
  • Sharp objects will need to be removed immediately since they can cause injury to you or your fish! This is especially important if there are small children around the tank or in your home.


To keep aquarium decorations from floating, place a magnet on the bottom of any object with metal and make sure it is large enough to cover at least 50% of its surface. You can also glue weights onto objects that do not have magnets or purchase weighted items for your tank. Lastly, you may need to clean out algae growth once in a while as this will reduce buoyancy and allow more water to flow through these areas, which could help bring heavier materials back down into the substrate. I hope you enjoyed this article on how to keep aquarium decorations from floating! Be sure to SHARE this useful information with everyone you know! Thanks for reading!

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