Do I need an air pump in my aquarium?

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Tags

1. #movement
2. #pumps
3. #adequate
4. #oxygen
5. #together
6. #first
7. #serve
8. #through
9. #concentration
10. #simply
11. #insure
12. #bubbles
13. #agitation
14. #water
15. #purpose
16. #surface
17. #required
18. #maintains
19. #purposes