Instruct: Classify a given review as either positive or negative.
Query: garbage!

I was really excited to get some mopani wood for my fish tank. when it arrived it looked great and was the perfect size. after having it in the water for about two days i started noticing little things all over the sides of my tank. i dont know what they were but they kind of cracked when i smashed them, they had an exoskeleton. while i was killing some i noticed another unwanted creature. little WORMS! i probably killed five of them and i dont know how many are still in the tank or in the fish! I don't know what to do now! i hope my fish are okay. and it does turn the water really orange