I was moving some rocks in my aquarium last night, and moved some zoos and my Green BTA around. When I was done with everything, I noticed that my left index finger was numb. I did not feel any sting, and theres no swelling or redness, just numbness. I thought that my finger went to sleep, so I put my index finger under some warm water. That did not help. This morning, it is still numb. Its my only finger that is numb, everything looks fine on it. Will this go away or do I need to get check out.