HomeCraft TutorialsMason Jar Aquarium Craft - Crafts by Amanda

Mason Jar Aquarium Craft – Crafts by Amanda


Kids can create their own imaginary fish aquarium using plastic mason jars. These adorable mason jar aquariums make great bedroom decor, and with the submersible lights, make fun night lights too!

mermaid and seashell inside a jar with water and aquarium plant

Why is this project a hit?

With less mess and maintenance than a real fish tank, these mini mason jar aquariums are fun to make and great to look at.

Kids can choose aquarium plants in their favorite colors and fun fish or even mermaids. Unlimited!

3 Mason Jar Aquarium With Plastic Fish

craft materials you will need

You can make your aquarium with plain water, or add a few drops of blue food coloring for a deep blue ocean feel!

Also I suggest to use plastic mason jar For safety reasons, instead of glass!

Labeled Supplies for Mason Jar Aquariums
Find the full list of supplies and instructions in the printable version at the end of this post.

Useful Project Information:

  • Age Level: 5 and up – Younger children may need help.
  • Dirt Factor: moderate – water leakage
  • Difficulty Level: Easy
  • Completion Time: 30 minute
  • Cost estimate: under $6.50

How to Make a Mason Jar Aquarium

These step-by-step photos and instructions are here to help you visualize how to make this project. Please scroll down to print out the instructions!

  1. First, if you want your aquarium to have a night light, attach one submersible light Use the inside of the jar lid E6000 glue, Set it aside to dry while you build your aquarium.
little boy adding plastic aquarium plant to a jar
  1. Place plastic aquarium plant in the jar.
little boy spooning aquarium gravel into jar
  1. Use a spoon to pour gravel around the bottom of the jar, covering the base of the plant.
little boy putting plastic fish in jar
young girl putting mussels in jar
  1. Place idols, fish, oysters and any other item in the jar.
Mermaid figurine in glass jar with plastic plants and aquarium gravel
Little boy pouring water into mason jar with aquarium plants and plastic fish
  1. If you want your water to be blue, add a few drops of food coloring to the water first and stir. Pour water slowly into the jar.
little boy holding the lid of a jar with a submersible led light
young girl tightening jar lid
  1. Tighten the cover in place.
three kids holding their mason jar aquarium

To turn on the light, carefully remove the cover, turn on the light, and replace the cover.

mason jar aquarium night lights all lit up

Expert Tips & FAQs

  • If the plant is too tall, you can cut off the top with scissors.
  • If you are just building the aquarium and don’t plan on using these as night lights, you can glue the lids on to prevent small children from opening them.
Little boy holding a mason jar aquarium he made

Kids will love making this adorable mason jar aquarium! Shopping for animals, plants, and other items is one of the best parts of this project!

Be sure to also check out our dinosaur nightlights and our fairy and unicorn nightlights!

more marine craft

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Plastic jar with aquarium gravel, plastic fish and plastic plants in blue water

print project

Mason Jar Aquarium

Create a fun miniature world under the sea to place on your bedroom shelf, display in the bathroom, or use as a night light!

age category: kids crafts

Project Type: craft

supply

  • 16- ounce plastic mason jar with lid
  • filtered water Tap water works, but may turn cloudy
  • plastic aquarium plants
  • aquarium gravel
  • plastic fish and/or figurines like mermaids
  • oysters starfish, etc.
  • submersible candle lights optional, if you want these to be night lights
  • blue food coloring optional

Instruction

  • First, if you want your aquarium to have a night light, attach the light to the inside of the jar lid using E6000 glue. Set it aside to dry while you build your aquarium.

  • Place the plastic aquarium plant in the jar.

  • Use a spoon to pour gravel around the bottom of the jar, covering the base of the plant.

  • Place figurines, fish, shells and other items in the jar.

  • If you want your water to be blue, add a few drops of food coloring to the water first and stir. Pour water slowly into the jar.

  • Tighten the cover in place.

  • To turn on the light, carefully remove the cover, turn on the light, and replace the cover.

Expert Tips & FAQs

  • If the plant is too tall, you can cut off the top with scissors.
  • If you are just building the aquarium and don’t plan on using these as night lights, you can glue the lids on to prevent small children from opening them.

This post originally appeared here on June 10, 2020.

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