i think you will find they will reach a balance in time. After starting up and moving several systems I can say that in my experience the tanks goes through swings of parameters we aren't even testing for. The little spiro worms and even vermatid snails seem to come and go in the early stages or whe everything is disturbed. I had tons of the sprios on my glass at first, but over time they use up whatever influx of nutrient that caused their explosion and they get to reasonable numbers. Try to wait a week before you do anything and see if they settle down on their own maybe.