Just passing by.
I have not done this in about ten years and I had salt water back then.

But I am willing to guess you might have done too much of a water change and you might have caused the ammonia level to spike up.

You did not say how much you changed. I would not add anything as this should go away in time.

A fish tank is like a garden, you have to give it time to bloom.

Good luck,
Rafed

Thanks for your reply. I had done a pretty big water change, and I also cleaned both filters. The cloudiness has finally gone away and the tank looks great. Next time though I will not do such a big water change, and I will alternate the cleaning of the filters.