How did you cycle? You said it was a brand new tank, how old? A tank will not just cycle within a couple days or even a few weeks from scratch.
Have you checked your ammonia, nitrite, and nitrate levels yet? If not, please get a trustworthy liquid test kit (I recommend the API Master Kit) and check the parameters ASAP.
Have you checked your ammonia, nitrite, and nitrate levels yet? If not, please get a trustworthy liquid test kit (I recommend the API Master Kit) and check the parameters ASAP.