Can I Put Lego In My Fish Tank?

by | Last updated on January 24, 2024

, , , ,

The very short answer is “Yes!”. The longer answer is this:

LEGO can go in an aquarium

. Of course, you can dunk anything in water.

What materials are safe for aquariums?

As a general rule,

terra cotta clay pots and other dinnerware

are safe in your aquarium; however, those with lead and copper glazing should be avoided. Decorative ceramic mugs and plates can provide fun hiding places for your most timid fish as long as they meet the safety requirements.

Can you put LEGO in water?

No problem!

Standard LEGO® bricks are not harmed by water

. Some specially designed one-piece boat hulls will even float on the surface of water, although most LEGO® creations will not. On the other hand, we don’t recommend you use your LEGO® bricks as decorations in aquariums or fish tanks.

Is LEGO toxic?


Lego bricks were among 20 to contain all nine harmful substances, which if ingested in small amounts over a long time period could prove to be harmful

. The element levels do not comply with EU limit values, which only apply to new toys, not second hand ones. Red, yellow and black plastic items were the worst culprits.

What ornaments are safe for fish tank?

Among the stones safe for use in aquariums are

natural lava rock, natural slate, natural quartz, natural river rock and petrified wood

. Be sure to boil collected rocks for an hour before placing them in your tank. Lace rock, which is available at Bob’s Tropical Fish, is a wonderful choice as well.

What household items can you use to decorate a fish tank?

  • Glass items.
  • Clay pots.
  • Mugs.
  • Infant safe plastic toys.
  • Pictures and posters as backgrounds.

Does LEGO float in water?


Lego bricks and Lego boats will often float, but not always

. Legos are made of ABS plastic, which is slightly more dense than water and does not float by itself. However, some Lego bricks (and boats) are able to float when they have the right buoyancy, density, and surface tension.

Are LEGO waterproof?


Basic LEGO elements won’t get damaged by water

, however depending on the condition of your water source, some residue may build up on the elements after prolonged immersion. So if you are thinking about keeping them immersed for a longer time, I would suggest using distilled water.

Are LEGO motors waterproof?

The motors used for the project can be purchased from LEGO’s educational distributor, www.pitsco.com.

The motors are waterproofed

through a similar method as described in the book Build Your Own Underwater Robot, by Harry Bohm and Vickie Jensen. First, the motor is taken out of the LEGO casing.

Do fishes cry?

As we mentioned before,

fish cannot cry

because they lack the part of the brain which allows mammals to produce tears. This part of the brain is called the cerebral cortex. Besides, fish lack both the emotional depth and mental complexity to be able to cry.

Is hot glue OK in a fish tank?

Hot glue is harmless for fish and is used by many aquarists across the world.

It’s safe to use in fish tanks because it decomposes fully when moist or wet

. Moreover, hot glue is waterproof and can be utilized in a variety of settings, including fish tanks.

Is rubber aquarium safe?


Liquid Rubber products are water based making them safe for fish

, they contain no solvents or VOC’s.

Is the 1980s Lego safe?


Researchers found untested toys from the 70s and 80s would fail to meet modern safety standards

. LEGO bricks are among the old plastic toys researchers have found contain dangerous levels of chemicals. Research carried out by the University of Plymouth shows that the second-hand toys would fail modern safety checks.

Do Legos have lead in them?

So yes, I LOVE Legos®; they are totally fine [the new ones, not the vintage ones —

the vintage ones, like many other vintage plastic items, can have Lead, Arsenic and Cadmium

), and as I said, I have tested countless new ones to confirm they are safe.

When did Lego stop using cadmium?

Article content

In the past, Lego has had some issues with the dyes used, especially yellow cadmium sulphide and red cadmium sulphoselenide, because cadmium compounds are toxic. These dyes were used until

about 1980

when a switch was made to less toxic perinone and azo dyes.

Can you put plastic in a fish tank?

Plastic. Many fish shops sell plastic toys, like Nemo or SpongeBob, to include in your tank.

When plastics are left in water for long periods of time they can release potentially toxic chemicals into the water, so they should be avoided in fish tanks at all costs

.

What is the best thing to put on the bottom of a fish tank?

What is

Aquarium Gravel

? Aquarium gravel, or any other material placed on the bottom of the tank, is referred to as substrate. Beneficial bacteria reside in your aquarium’s substrate and break down fish waste, leftover food, and plant debris to keep the water conditions healthy.

Can you put shells in a fish tank?


It’s not a crime to use fish tank shells for your freshwater aquarium as long as they serve the purpose of making water hard

. Otherwise, avoid using not just fish tank shells, but any other substance that might alter water chemistry.

What can I use instead of gravel in my fish tank?


Sand

has a couple of other benefits when compared to gravel. Many aquarium owners think it looks more natural, better mimicking the lakes or riverbeds that make up fish’ natural habitats. In addition, closely packed sand substrate needs to be changed less frequently.

What glue is safe for fish?


Cyanoacrylate Super Glue and pure silicone

are the most common aquarium safe adhesives used.

Can you 3D print things for a fish tank?

Are 3D Printed PLA Objects Aquarium Safe?

PLA printed objects are aquarium safe

. Their non-toxicity makes them an ideal choice for use in your aquarium. However, when using PLA filaments in your aquariums, there are some things you should know to avoid harming your marine life.

How do you keep Legos from floating?

I recommend

burying some part of the build in the gravel or whatever is covering the bottom of your aquarium

. This will keep your LEGO stationary and avoid floating creations.

Does the Titanic LEGO set float?

How much does the LEGO Titanic weigh when built?

About LEGO

®

RMS Titanic

The LEGO

®

set “10294: Titanic” contains of 9090 pieces and weighs

14.000 grams

. Building time of this set is 25 – 26 hours. Its package dimensions are 58.50 cm width, 47.50 cm height and 38.50 cm depth. It was released in 2021.

How do you sanitize LEGOs?

We recommend that you clean your LEGO® parts

by hand using water no hotter than 104°F / 40°C and a soft cloth or sponge

. Higher temperatures may affect the quality of the parts. You can add a mild detergent to the water – please rinse them well with clear water afterwards and you’re done!

Will LEGO stickers come off in water?

Does LEGO fade in sunlight?


If LEGO gets exposed to direct or strong indirect sun (like midday sun through a window) on a regular basis, it will eventually get discolored

. Discoloration can also happen from artificial light that is too bright and too close to your display. This will especially be visible on white and blue bricks.

Diane Mitchell
Author
Diane Mitchell
Diane Mitchell is an animal lover and trainer with over 15 years of experience working with a variety of animals, including dogs, cats, birds, and horses. She has worked with leading animal welfare organizations. Diane is passionate about promoting responsible pet ownership and educating pet owners on the best practices for training and caring for their furry friends.