How can you create a self sustaining aquarium at home?
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There are many different ways to approach a self-sustaining aquarium, from a small fish bowl to a 200-gallon tank. Each comes with its own challenges and rewards.
Small Bowl
Pros:
doesn't take up much space
fast to set up
inexpensive
Cons:
little room for diversity and representation of all necessary levels of organisms
less room for error
nitrates build up faster
plants outgrow the tank faster
Overall: a bowl is great for experimenting, but very challenging to keep self-sustaining for very long.
Medium-Sized Aquarium (10-30 Gallons)
Pros:
more space for plants to grow
more options for diversity of organisms
more chance for sustainability over time
takes up modest space
fairly easy to set up
Cons:
higher cost than a smaller set-up
more substrate (sand and gravel) needed
still not large enough for ideal sustainability over a long time
Overall, this is probably the best choice for the average hobbyist with only moderate space and a strong interest in developing a sustainable aquarium.
Large Aquarium (60-200+ Gallons)
Pros:
significant room for sustainability
can handle multiple species of more complex organisms
the highest chance of sustainable longevity
Cons:
heavy (with water weighing 8.35 pounds per gallon, a large aquarium including the glass and water can weigh over 1000 pounds)
hard to make room for
more expensive to light, heat, and set up
Overall, a large aquarium (100 gallons plus) has the best chance of sustainability over a long period of time, but it is so big and heavy that it's just not realistic for many people.
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Small Bowl
Pros:
doesn't take up much space
fast to set up
inexpensive
Cons:
little room for diversity and representation of all necessary levels of organisms
less room for error
nitrates build up faster
plants outgrow the tank faster
Overall: a bowl is great for experimenting, but very challenging to keep self-sustaining for very long.
Medium-Sized Aquarium (10-30 Gallons)
Pros:
more space for plants to grow
more options for diversity of organisms
more chance for sustainability over time
takes up modest space
fairly easy to set up
Cons:
higher cost than a smaller set-up
more substrate (sand and gravel) needed
still not large enough for ideal sustainability over a long time
Overall, this is probably the best choice for the average hobbyist with only moderate space and a strong interest in developing a sustainable aquarium.
Large Aquarium (60-200+ Gallons)
Pros:
significant room for sustainability
can handle multiple species of more complex organisms
the highest chance of sustainable longevity
Cons:
heavy (with water weighing 8.35 pounds per gallon, a large aquarium including the glass and water can weigh over 1000 pounds)
hard to make room for
more expensive to light, heat, and set up
Overall, a large aquarium (100 gallons plus) has the best chance of sustainability over a long period of time, but it is so big and heavy that it's just not realistic for many people.
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