Building a Mini Ecosystem on My Desk: The Journey of Creating a Shallow Tank

TLDRFollow along as I transform a free tank into a mini ecosystem on my desk. Despite some setbacks and challenges, including cracking the tank, I managed to create a beautifully designed scape with rocks, plants, and fish. The tank doesn't require a mechanical filter thanks to the hard work of gobies, corys, and plants, showcasing the beauty and self-sustainability of an underwater ecosystem.

Key insights

🌿Creating a slope in the scape makes it more visually interesting.

💡Positioning rocks and branches strategically helps create a natural look.

🌱Adding terrestrial plants above the waterline adds an extra dimension to the scape.

🐟Introducing fish, like guppies and gobies, helps maintain the balance of the tank.

🔍Installing plastic rings in the tank's surface provides windows into the underwater world.

Q&A

What happened when you cracked the tank?

I had to come up with a new plan and spend extra time taking the tank apart piece by piece. In the end, I managed to repair the broken pane using glass from the top half of the tank.

How do you maintain water quality without a mechanical filter?

The tank relies on a natural balance achieved through the work of gobies, corys, and plants. They help clean the tank by combing the riverbed, sifting waste through the sand, and maintaining the nitrogen cycle.

Do you need to fertilize or add CO2?

No, the tank doesn't require additional fertilizers or CO2 injections. The plants rely on the nutrients from the bed of mud and the carbon dioxide produced naturally by fish and bacteria.

How do you manage algae growth?

The tank has a balance of floating plants, stem plants, and fish that help control algae growth. Regular trimming of the stem plants keeps the tank balanced, while the fish and microfauna consume excess algae.

What advice do you have for someone starting a similar project?

Take the time to plan and research the type of plants and fish you want. Be prepared for setbacks and challenges, but don't be discouraged. Experiment, learn, and enjoy the process of creating your own mini ecosystem.

Timestamped Summary

00:00I wanted to create a mini ecosystem on my desk and decided to repurpose a free tank.

02:00I cut the tank in half and repaired it after accidentally cracking it.

05:12I designed and arranged the hardscape using rocks and driftwood, creating a natural-looking scape.

06:42I added a bed of mud underneath the sand to provide nutrients and support the growth of plants and bacteria.

09:10I introduced fish, such as guppies and gobies, to help maintain the balance of the tank.

11:06The tank flourished with vibrant stem plants, gobies, and corys, creating a colorful and self-sustaining ecosystem.

13:06Baby fish started appearing, living among the roots of the plants.

13:30The tank continued to thrive, but additional tanks were needed to support the growing fish population.