What would be a general cycle time with 4 gold barbs and 6 serpea tetra's in a 30g tank. The levels in the tank are unchanged for the last 3 or 4 times i have tested them. It almost seems like the tank has not done much since i started the tank 6 weeks ago. I am anxious to add more fish but weiry that they might die because the tank is not done cycling yet, all levels are unchanged since the beginning. Any and All help would be greatly appreciated!