What do I need to raise fresh water fish?

I recently received a 55 gal tank and want to raise some fresh water fish. All I have right now is a filter. What else would I need?Do I need a UV light and air pump?Also would I need another filter?
Thx for the response.

I really want to raise tropical fish and was wondering if I have two tetra whisper ex70 would i need a air pump?




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I have a tetra whisper filter 10 gallon in my aquarium, and it seems to overfill and then eventually vaporize the water level somehow. I’ve been monitoring it, and cleaning out the filter cartridge over and over and it seems the filter consistently causes water loss.
@ball thanks. Well it is a tropical tank so i’m worried that the water temp might reach below 72 degrees and it’s pretty hot consistently where I live (southern california)




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How do I get my aquarium to cycle?




I need serious help. I set up a 46 gallon aquarium at the beginning of June and can’t get it to cycle. Unfortunately, I have listened to advice from 3 different pet shops, and all 3 had different answers. I initially ran the aquarium for a week, then my local pet shop told me to add bacteria and 2 goldfish, which I did. Of course the ammonia climbed, as it should have, so next, 2 pet stores told me I had to perform frequent water changes, preferably some every day, which I did-about 2 gallons every morning, which kept the ammonia at about .5 ppm. Fish stressing from ammonia. I kept this up until a couple weeks ago. I had a Tetra Whisper filter and could not figure out how the bacteria filter would grow in that setup. The NEXT pet store told me the filter was no good, so I switched to an Aqua Pure three-stage filter which includes sponge material for the bacterial colony. They said my frequent water changes were keeping the aquarium from cycling and that I should stop it until cycling had occured. They also suggested I add Bio-zyme every day for a week, which I did per the instructions. They told me it would cycle the aquarium in a week. Nope, still no cycling occuring. Ammonia has been at 1.0 ppm for a week now and I am afraid I am going to lose both my fish. What the heck am I doing wrong?? Where should I go from here?
In response to the first answer-has the bacteria had long enough to grow, since I switched filters a week ago? Or does it exist on all surfaces, not just the filter?




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