Water Change

[bonolover]

I am curious - how long after a water change should you notice a change in the test levels? Is this something that happens after 2 hours or a day? Another thing - is the ammonia/nitrites in the water or in the biological filter material?

 

[zack schwartz]

It can vary for me it took a couple of hours

 

[wrassecal]

I check mine the next day once everything has filtered and settled in.