I am in the Dallas area. I tend to have very hard water and use Prime in it with all new water. I do a 50% water change weekly, and currently the nitrate is 0 and nitrite is .05 and the ammonia is at 0 as well. I am not very familiar with water hardness, do I need to add something to the aquarium to ...

I am new to all this and just got a 20 gallon aquarium. I try to be an informed aquarium keeper and make sure everything is just right. It has been set up for a month now, and I have10 fish total, that have been added slowly. I have 6 glo fish, one guppy and 3 Pristella Tetras. I am interested in ...