Just got my tank running not too long ago. I used the fluval biological enhancer stuff that supposed to help establish you tank in a few days. Says "add fish immediately". I did not use my kit to measeure until about a week after. It came up with a slight trace of ammonia and a bit of nitrate. When cycling a tank, are these numbers supposed to be through the roof? Just wondering if the biological enhancer pretty much did its job or if it's done nothing. Was thinking about putting in a few danios to see how they do.