No sign but something cleaned out the scallop. You can see the trail to and from it on the glass.I did test for free ammonia with a seachem alert, actually still have it hanging. It was fun to watch the enormous spike which lasted only 4 days.
Any signs of mantis and gorilla crabs yet?
The Turbo 900 helps keep the ammonia spike to a minimum from past system setups, imo, although I never test for it.