It was purchased from an lfs a while ago but was screwed onto the rock. My dad put it in one of his tanks and all the fish died. I then noticed that the screw was rusted so I got some aquarium silicone to hold it on. But can the wood hold a disease?
I dont think so. If you buy it from lfs it should be find but you should boil it and socke it in a bucket of water for 3-4 days and change the water every day