I'm a novice and my tank is about a year old. I had just changed my lights for brighter ones and things started to explode in the tank. I noticed that I start having this "sticks" growing all over the place - shells, rocks, coral - you name it, it has it. I tried to remove it but they are very hard and it just cracks it will break in pieces. At the base it spirals and then flairs out. Sometimes something stringy comes out and it looks like I have a underwater web going on. These guys are growing exponetially! Does anyone know how to control these things or even know what they are? Here is the picture of them.