I just set up a new tank almost two weeks ago. I'm still a beginner with aquariums but I am learning a lot. It seems that most of the fish (6) glofish and (4) male guppies all want to stay near the top. I have read that it made be because there are high ammonia and nitrate levels in the tank. I have not yet bought a testing kit but I wanted to make sure that this may be the problem and if so how do I go about fixing the problem.

Anyones help would be greatly appreciated.

Thanks!

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