How to make portable aquarium using used gallon

 

You can use this type of 5-gallon water container, but treat it as a small aquarium—not as a sealed decoration. The aquarium shown appears overcrowded for long-term guppy care.

Materials

• Undamaged food-grade 5-gallon container
• Battery-powered or USB air pump
• Small sponge filter, airline and check valve
• Secure ventilated lid
• Aquarium-safe silicone
• Fine aquarium gravel or sand
• Live aquatic plants
• Water conditioner
• Ammonia, nitrite and nitrate test kit
• Small heater if required for tropical fish
• Strong plastic carrying crate or base

Construction steps

1. Clean the gallon
   Use a container that previously held drinking water. Rinse it thoroughly with water—never use soap or household chemicals.
2. Create a maintenance opening
   Carefully cut a wide opening into the upper section so you can install equipment, clean the container and catch fish. Smooth every cut edge and cover it with aquarium-safe edging.
3. Make a secure lid
   Create a removable lid using food-safe plastic or fine rigid mesh. Add a small hole for the airline. The container must be ventilated and must never be airtight.
4. Install the sponge filter
   Place the sponge filter at the bottom and connect it to the external battery or USB air pump. Install a check valve with its arrow pointing towards the aquarium.
5. Add the natural elements
   Add a thin layer of rinsed sand or gravel, followed by live plants and the natural moss ball. Avoid sharp stones and heavy decorations that could damage the container.
6. Add conditioned water
   Fill it with tap water treated with aquarium water conditioner. Leave several centimetres of air space beneath the lid.
7. Test for leaks
   Operate the aquarium without fish for at least 24 hours. Check the lid, airline, filter and container for leaks or deformation.
8. Cycle the aquarium
   Establish beneficial bacteria before adding fish. Continue cycling until tests consistently show 0 ammonia, 0 nitrite and some nitrate.
9. Stock it lightly
   Five gallons is too small for the large number of guppies shown in the picture. Consider shrimp, snails or one appropriately housed betta. Use a tank of at least 10 gallons for a small guppy group.
10. Move it safely
    Never lift a full aquarium by the gallon’s neck or handle—five gallons of water alone weighs approximately 19 kilograms. For relocation, remove most of the water and carry the container upright inside a strong crate.