The Best Aquarium Decorations of 2021


There is nothing more rewarding than looking at a well-decorated and themed aquarium. It’s not only the species we put in the tank that beauty it but also the decorations we set up there. As you see, it’s not just the fancy and colorful equipment we use but also putting personal touches in the tank with the best aquarium decorations. These additions make our tank more attractive and appealing, especially if it’s used as a room’s focal point. It also feels rewarding and satisfying to set up an attractive tank.

However, it’s uneasy to pick tank decorations because you can find many of these on the market. Some are aquarium rocks, lights, plants and some nice structures. There are just plenty of them, so it can be time-consuming on your part. Worry not, though, as we’ve put up this buying guide for great tank decorations that you might want to consider.

What is the Best Aquarium Decorations

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Top 8 Best Aquarium Decorations Reviews

1. Best Aquarium Decorations Cave: Penn-Plax Officially Licensed Nickelodeon


These Aquarium Ornaments are cool and nice to look at, especially if you want to add some animation touch to the overall feel of your tank. The licensed SpongeBob ornaments are safe for both saltwater and freshwater tanks giving you peace of mind that it won’t harm your tank friends.

Plus, you can save so much choosing this decoration because it comes with three in one price. All the decorations have also been expected to ensure the safety of your tank friends. They are also easy to clean.

However, there were reports that the paint could be toxic to some fishes. Overall, though, the decorations are some of the coolest choices on the market because it is made of high-quality resin material and can add an overall cool look to the tank.


  • Licensed and safe for the tank
  • Ideal for saltwater or freshwater tank
  • Adds a youthful overall appearance
  • Durable resin material
  • Brings in more colors to the aquarium


  • Some complaints about its paint being toxic

2. Best Aquarium Decorations Castle: Miracliy Aquarium Decorations Castle


Do you want a royal appeal for the decoration of your tank? You might want to check out this castle decoration, which is one of the top-rated items on the market. It is by one of the most popular brands in the category – Miracliy. This fake castle ornament can add life to your aquarium. It can stand firmly in the tank without any worries because it has a flat bottom, too.

On the cons, some people complained that it’s not easy to clean and maintain. But then, these were isolated reports that do not comprise most of the feedback from users. You might want to check it out if you want to beautify your tank.


  • Safe and non-toxic
  • Adds a royal appeal to your tank
  • Can stand steadily
  • Reputable brand
  • Made of durable resin material


  • Some complaints about it not being easy to clean

3. Best Aquarium Decorations Rock: Natural Slate Stone 3 to 5 inch Rocks


I liked adding some ornamental rocks to my tank, and I’m happy to find this natural slate stone. They give that nice natural appeal to the tank instantly. On top of that, I’d recommend these rocks for aquascaping because they just look fabulous.

This product is also made of real slate stone. Every bag is with a mixture of stones from three and five inches. You can also check out the stones if you have a DIY project for some benches or steps. They are also okay for decorating dollhouses and model railways.

On the cons, the Small World Slate & Stone can seem bulky for some small tanks, though. However, if you’re looking for safe and non-toxic decorations, you might want to consider natural slate that works perfectly for miniature and fairy gardens.


  • Ideal for fairy, miniature garden
  • Great for reptile enclosures
  • Top-rated natural slate
  • Versatile also for benches, steps and walkways


  • Some said they’re bulky for their tank.

4. Best Aquarium Decorations Live Plant: 6 Marimo Moss Ball Variety Pack


The moss ball variety pack will surely add life to your tank without posing any harm to your fish and plants. Each pack comes with four different sizes of moss balls. This product is all-natural and sustainably harvested; thus, they’re excellent additions to your tank.

These moss balls do not contain any pests and contaminants, ensuring safety of your pets. These do not contain any pesticides, dye and contaminants. These ornaments are also in lovely deep green color. They don’t also require much maintenance, ideal for busy tank owners. They have a unique appearance that adds life to your aquarium.

On the cons, there were reports about shedding, though. But overall, many tank keepers are happy with this product. These moss balls are all-natural and won’t pose any harm to your tank friends. Check them out for yourself.


  • All-natural
  • Lovely tank decorations
  • Freshly harvested
  • Quick shipping times
  • Quality live tank plant


  • Shedding issues

5. Best Aquarium Decorations Artificial Plant: Marina Ecoscaper Silk Plant


Marina Ecoscaper Decorations is another reputable brand on the market for its commitment to quality. Tank keepers just like it for consistency in delivering top of the line and lovey tank decorations. One of their best offerings so far is this Silk Plant in Hydrocotyle, which looks just outstanding and eye-pleasing.

The Hydrocotyle plastic plant is also affordable, yet it is durable to last a long time. This ornament does not also require any maintenance, but if ever, it’s easy to clean. It has a translucent color that can resemble the natural ocean environment. It will also not fade, so it stays looking new for a long time.

On the cons, the glue might turn into white after weeks of submersion, according to some reports. But then, most tank keepers are happy with their purchase, especially this item doesn’t require cleaning and maintenance.


  • Easy to install
  • Non-toxic and safe materials
  • Just the right height and size
  • Does not fade
  • Looks natural


  • Glue turning white after weeks of submersion

6. Best Aquarium Decorations Background: New 9088 20″ x 48″ Background


The New 9088 fish background looks natural. It is perfect for those that want to decorate their tank and make it look like a real marine environment. You can achieve that easily with this background that is perfectly drawn to appear like a real ocean environment. It can add beauty and appeal to the tank and improve its overall look.

This product is also composed of a heavy-duty plastic background, which is trim to fit. It is also easy to install and requires no maintenance unlike with rocks that might need cleaning occasionally.

On the cons, its print resolution is of lower quality, according to some reviews. Overall, though, it can add appeal and life to your tank because it can mimic the real marine environment undoubtedly. This item is also affordable that makes it an excellent addition to your aquarium.


  • Durable plastic material
  • Nice ocean view
  • Easy to install
  • Ideal dimensions for most tanks
  • Adds beauty to your tank


  • Lower print resolution

7. Best Aquarium Decorations Coral: Nature’s Ocean 12-Inch Coral


One of the best decorations for preserving natural reefs, this coral doesn’t just look natural, but it also helps in the preservation of natural reefs. It is also ideal for growing live coral and culturing live rocks. And if you love coral farming, you can also check it out.

In addition, this coral can adapt well to the natural tank environment. It will not ever affect any cycling in your tank. Plus, this item can be soaked into the water deeply, preventing leeching. It will not become an issue at all. It is also a porous biological filter without any biofilm.

However, its maintenance can be an issue because they might develop mold if not regularly cleaned or power washed. Nevertheless, if you’re looking to improve the natural appeal and look of your tank, you must include this product on your list.


  • Natural-looking coral
  • Ideal for coral farming
  • Can adapt to live environments fast
  • Free of biofilm
  • Natural biological filter


  • Maintenance can be an issue.

8. Best Aquarium Decorations Wood: Fluval Mopani Driftwood


The Fluval Mopani Driftwood is the top pick among tank keepers that want a decorative wood for their tank. It is also small enough that it will not appear bulky or take up much space. It will not also ruin the natural appearance of your tank’s overall decoration.

This product is also sandblasted, preventing water contamination. It is also a pre-cleaned, although pre-soaking for about a week is required. The driftwood can also settle into the tank steadily without any hassles.

However, presoaking is needed prior to adding it to your tank. Overall, it is an excellent pick because it can promote the natural beauty of your tank and will not cause any water contamination. It is also a natural driftwood for an added accent to the aquarium.


  • Natural driftwood adds a nice accent to the tank
  • Promotes beauty and a natural look
  • Can prevent water contamination
  • Thoroughly cleaned
  • Non-toxic and safe


  • Presoaking is needed.

Aquarium Decorations Buying Guide

How should you choose tank decorations? Before purchasing any, you should consider the following factors to ensure that you’re getting the right ones.

Size of your tank

If you have a small one, you should avoid bulky and large ones. Otherwise, large decorations can make the tank crowded and give a hard time to your pets to swim and move around. It might also suffocate your fish, while also leaving a messy look. Pick decorations that will not crowd the tank but will promote its overall appeal.


When choosing tank decorations, another consideration is their height. Think about dividing your tank into three zones – top, center and bottom – because your fish are likelier to explore and spend time in these zones.

Non-toxic and safe

Safety is paramount concern when choosing tank decorations. Make sure that the ornaments are without any toxic elements that would harm your pets.


The decorations to pick should work in harmony to improve the appearance of your tank. It is also not a good idea to over-decorate the tank, or it will appear crowded, make it hard for fish to move, and suffocate your finned friends. It can also make the overall look cheap and full of clutters. Focus on one theme and carefully select those that fit your vision.


Just as you would select a theme and stick with it, you must also pick the right color combination to achieve it. As much as possible, you must achieve a natural looking tank by picking more greens and small gravels with the ideal color to match the other ornaments. On the other hand, you might also want to add some vibrant colored decorations for specific spots for a more appealing look.

Consider these things when choosing aquarium decorations to ensure that you’re setting up a non-toxic, lively and cool environment for your tank friends.

What is an Aquarium Decoration?


The main reason to buy tank decorations is to add life and make your aquarium look more beautiful. It can be natural or artificial ornaments, such as plants, rocks, corals and other accents. They can also be substrates or backgrounds that can improve the overall look of your tank. Nevertheless, you can find many of these on the market, so it is best that you decide on the overall theme of your tank, helping you choose those decors to achieve it.

Types of Aquarium Decorations

Aside from the factors to check when comparing your choices, you must choose based on the type of ornaments available. In the following is a short overview of what to expect from these decorations based on type.

You can find organic decorations. They can be corals, rocks and driftwoods and are commonly chosen to achieve a natural appearance of the tank. Also, plants, rocks and substrates are also used to improve the overall appeal of the tank’s appearance.

On the other hand, there are artificial decorations available. Some of these include artificial, translucent plants. Others are artificial anemones and coral replicas, which are also famous for saltwater or freshwater tanks. If you’re new to fish keeping in a saltwater tank, you might want to use artificial corals and anemones because they’re not hard to maintain.

Moreover, you can also find a wide range of tank decorations, which include bones and shipwrecks, that will leave a more exciting look to your tank. You might want to check these out, too, if you want to add interest in your tank’s overall appearance.

You can also add a background or backdrop that will add an interesting visual element to your tank. It is affordable and does not fade. However, you might want to read reviews to find out which among them are with high resolution print. It might also be nice to choose a background that will match to the theme you have chosen.

But then, you should go for safe options to ensure that the decorations are not toxic for your pets. You should choose a decoration that suits a freshwater or saltwater tank, depending on the kind you’re keeping. Consider these things when choosing aquarium decorations so that you will come up with the right choices. You might want to get started in the comparison using our buying guide earlier.

Why Do You Need Aquarium Decoration?

Without aquarium decorations, your tank will look boring. And even if you don’t know it, your finned friends might not like it. That is why it’s hard to imagine a tank that does not have any decoration on it, be it artificial or organic. And after all, there is nothing quite more rewarding than setting up a well-decorated and beautiful tank. So, if you’re improving the focal point of a room with an aquarium.

Tank decorations can add life to your aquarium because they add a more interesting and stunning look. It’s not just pleasing for the eyes of your guests but also for your fish. Your pets will really appreciate this effort of beautifying their dwelling place.

In addition, the natural ornaments can make the tank environment mimic like a real ocean environment. It will also make you feeling instantly relaxed simply by looking at your creation. And if you love the beach or the ocean, you will appreciate this view right at your home.

A few organic elements can also improve the oxygen supply in your tank. On the other hand, artificial decors can last long because they don’t disintegrate or leaves mess in your tank. Nevertheless, these are only some of the advantages of using tank decorations.

Frequently Asked Questions


How to clean aquarium decorations?

You should clean tank decorations regularly. Use soft-bristled brushes, wash kits, or soft scrubbing pads to clean the decorations. However, make sure that the cleaning products to buy are designed for your tank. To ensure any specific cleaning instructions, refer to the user manual.

How to make aquarium decorations safe?

Making the decorations safe is easy. For one, you must presoak them for about a week, or depending on the instruction of the manufacturer. You can also clean them before putting into the tank, based on the instructions in the manual. But most importantly, you can make decorations safe by choosing reliable manufacturers that make their decorations with non-toxic components. These are only some of the things you can do to ensure the safety of the tank ornaments, but nonetheless, choose products also meant for the type of tank you have.

Do fish like decorations?

Yes, even if they cannot express it. They appreciate a well-decorated tank because they can have a hiding place, for one. Also, these decorations can create that ocean- or marine-like environment to the tank. However, you must decorate the tank with the decorations that you liked if they’re safe to the fish. You can choose to decorate it with organic or artificial ornaments, including silk plants, artificial corals and anemones. It is also nice to put an artificial castle with holes where fish can hide, too.

Where to buy aquarium decoration?

You can buy tank decoration in the fish supplies shops and pet stores. Also, these ornaments are on the websites of the manufacturers themselves. Online marketplaces, such as eBay and Amazon also sell these decorations. But before buying yours, compare the features you’re looking for, including the type of tank ornaments. You might want to start with the selection using the buying guide outlined earlier.


So, what are the best aquarium decorations? These ornaments, either artificial or natural, are tested for safety. They are non-toxic to the fish and are easy to clean. Also, they’re available in many choices, including rocks, plants, corals, and so many more. But when choosing the right one, you must consider certain things like type, color, height, and size. It’s also wise to think about the theme of your tank to ensure that you’re matching the decorations to use in the tank. Hoping you could select the right tank decorations by using this buying guide with the top picks in the category. Compare your options and buy the right ornaments today!

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