external parasite

Hi all! I have a 30 gallon tank with a pair of German Blue Rams, 25 (ish) Neon Tetras, and 1 Powder Blue Gourami. For filtration I'm using 2 AC 50s and 1 AC 30. Heating with the new version of Aqueon pro set to 80 degrees Fahrenheit. The tank is newly setup maybe a few weeks but is completely...