Not really, here is a quote from the article; "Mangroves not only have the ability to absorb nitrates, but phosphates and other organics as well. In fact, they remove organics so well from the water that they act as a replacement for a protein skimmer. When using mangroves you will notice your protein skimmer working less and less all the time. The more the mangroves grow and mature, the more they absorb the excess organics in your water, and the skimmer has nothing to remove and becomes obsolete. If you are a naturalist and don't want to have to use chemical additives or compounds to reduce and control nitrates in your aquarium, this is a very effective filtration method to consider". They start using the nutrients right away. It's just the more they mature the greater the efficiency. No need to argue, just understand the nature of them. My wife and I had the pleasure on a couple of occasions to go to the Everglades in Florida and on one trip the guide took us into the mangroves and stopped and gave an explanation of how the organism works. Quite interesting, me having an aquarium, so I asked questions and learned quite a bit. What is the rush, like anything, they do grow and out perform most macro. Could any other macro replace your skimmer?