3reef members tell me if you use carbon in your tank to remove the impurities from the water. Some people do... While others don't. Reason im starting this poll is cause I found Im having issues with my sps after I've started using carbon and phosphate remover media. Trying to eliminate the causes. Water testing has shown no causes to my sps struggle. In the past all sps has thrived in my tank without any media. Now that Ive introduced carbon and PFO I havent had such nice growth as before and some frags just crapping out on me. So vote and explain why you do run carbon or why you dont.