Hi all. I have a 20 gal tank with hang on back filter from Top Fin in their all-in-1 aquarium setup pack. I have 2 species of fish (all juvenile at the moment)- 2 honey gourami and 7 lambchop rasboras. They are both low current species and I noticed one day that the rasboras were tending to stay on one side in what I assumed was a consequence of them trying to avoid the current. I have since lowered it and while this has increased their movement throuhout the tank, I am worried about the consequences of a lower current. Is there anything I need to worry about? Oxidization or dead zones? Anything like that. Thanks!