Alright guys...
So..after my huge water change yesterday, had 0 levels of ammonia, nitrite, and nitrate. Then dosed up to 4 ppm ammonia and waited until now to check.
My readings are: 0 ppm ammonia, 5+ nitrite, and 10-20 ppm nitrate.
Was hoping to see nitrite levels to be 0 ppm also but it is...