Originally Posted by protokix22
Okay, so I'm a little nervous right now. I just did a 20% water change and my ammonia has spiked up to .25. Before this change, I was at 0. I put two clowns in about a week and a half ago, so I'm assuming my bacteria was built up enough to handle the bio load.
It's a 60 gallong fish only tank with a wet/dry and a cannister filter for some more mechanical filtration.
Did you stir up the gravel or sand substrate with the water you added when you did the water change? If so, you may have released some trapped nutrients from the substrate when you did. Keep an eye on it, be prepared to do another PWC
if required and see where it goes.