I have 3 FBT in one tank it's first rock and a large water dish. I lifted up the dish and rocks to clean and found a ton of small tinny ant like bugs underneath, what could they be and how to get rid of them. I have moved them to a water tank for now with a small play form for them. Any suggestions, should I just keep them in the water tank or much them back to the dirt tank and ran the bugs? I'm just worried the bugs will come back