دوست عزیز به نتیجه مقاله علمی زیر توجه کنید:resent studies by Professor Feldman has shown, regardless of the type of skimmer used, skimmers will only remove about 20% of the unwanted TOC. I strongly suggest that you read Feldman's study published here. Feature Article: The Development of a Method for the Quantitative Evaluation of Protein Skimmer Performance — Advanced Aquarist | Aquarist Magazine and Blog