I recently added my first fish, a maroon clownfish, to my aquarium. She seemed fine for about two days, however on the third day; she seemed a lot less active and was gasping at the surface surface. My first thoughts were that there wasn't enough oxygen in the water, so I adjusted my power head so that it agitated the water more. Now there are tons of bubbles in the tank and it's quite a bit louder. Now she seems fine. My levels have been constantly Ammonia-0ppm nitrite-0pp, nitrate-20pp, and ph-8 for the past few days. Did I fix the problem? Are the bubbles going to be a problem?