Since fish originate from an environment that has virtually no detectable ammonia, nitrite, or nitrate, the best way we can simulate that environment for them is with the water changes. We have some basic guidelines we can follow for doing so. For an already cycled tank when the nitrAte levels exceed 40 ppm a 50% water change will bring the level back down. In a tank undergoing a cycling process, when the ammonia or nitrItes reach 0.25 a 50% water change will bring them back to an acceptable level of approximately 0.125.
I think it is OK to gravel vac as JLK said. Don't worry if you don't get it all. Goldfish also will scavenge off of the bottom.
After reading JLK's last post I agree with her on the water change for today.
As was said, we are just offering advice. I know there is conflicting advice out there on the internet, but if you follow the advice of people here you will be successful. JLK helped me out when my cycle stalled on my first tank. Now, I have 6 tanks and two batches of fry and I don't even know where the next tank is going to go.
I think it is OK to gravel vac as JLK said. Don't worry if you don't get it all. Goldfish also will scavenge off of the bottom.
After reading JLK's last post I agree with her on the water change for today.
As was said, we are just offering advice. I know there is conflicting advice out there on the internet, but if you follow the advice of people here you will be successful. JLK helped me out when my cycle stalled on my first tank. Now, I have 6 tanks and two batches of fry and I don't even know where the next tank is going to go.