| Wouldn't skimming or using Macro-algea do the same thing ? I know there was an article either in advancedaquarist or reefkeeping which mentioned that because mangroves are very slow in growth there not as effective as caulerpa or other macros in nutrient export. Also isn't the buildup of nutrients what could be toxic ?
__________________ Robert  My Cube “A spirit is manifest in the laws of the Universe—a spirit vastly superior to that of man, and one in the face of which we with our modest powers must feel humble.” Albert Einstein |