i have been having slight ammonia problems in my tank, i dont know why, the ph, nitrate, and nitrite levels are fine, but i have noticed the ammonia getting a little high. my female sword tail sometimes freaks out and goes nuts a little, my friend told my it could be some kind of a parasite because he noticed her rubbing up against things, i dont see any white spots on her, but i have noticed that some of her fry are dying off more than usual, the other fish seem fine, what could this be?
