Thats weird that you have nitrates and ammonia I would imagine that it would have already gone thru the cycle and should only be nitrates if you have any nitrates, maby its still just cycling this stuff this is fairly new to me to. My new tank i set up about a week or 2 ago is going thru a bloom to but I have zero ammonia and i know something happen cause just like you I had a low amount but def some there like 0-.25, im on day 2 but it seems to be clearing up. I would keep a close eye on the ammonia.
I also chose the cheater way out and used api quick start. I do know the tims and the quick start have been proven to work tho.
Did this just start happening today?