I am so tired of every single store you go to u get diffrent answers. Please if you have the time I would love some feed back. I also hope this will help other people. First I was using carbon in my tank. Reciently my tang has come down with a pretty belad case of hole in the head. I am now feeding my tang spectrum pellets and other healthy foods. I have hurd that carbon can take important nutriants out of the water. Also I have a 14 ,000 k 175 watt metal halide. Is this enoughf to substain baby clams and Sps corals if they are within 10 inches of the surface. Also what is the deal with bio balls and filter socks. I used to have bio balls but have reciently stopped using them because I have been convienced that they are bad. So are bio balls good or is a filter sock good????? Also I have a filter sock in my tank and my questin is how do I clean it. It won't come clean when I rinse it under the sink. Are there any downsides to a filter sock. What about a down side to bio balls. Also if you have lps corals sps corals invertbrayes and clams what supplements should be added to the water. And what they don't tell you what is the affect of using these suppements and what do u halft to do when using them. Do they mess up the water chemestry or are there suppements u halft to add a supplement to the suppement u are adding. Those last senteces were just examples I am not talking about any spacific suppement. They tell u stuff and expect u to know everything that do but most people don't and then there are consqueces. Answers would be great. Expecialy about cleaning filter socks. Thank you.