Amphiprion
Premium Member
Is the tank going to be just macroalgae and mangroves? If you plan on incorporating seagrasses, I actually recommend a skimmer due the amount of organic matter that they create--especially if you are pushing growth. It may not be a horrible idea with macroalgae, either. At the very least, it will aerate the water and keep the pH from rising so high from the effects of photosynthesis. I don't think you'd need any large, expensive skimmer, however. Even a small one would be a reasonable idea. If you are against the idea, that's okay too, as it should work fine without one--it just may make things slightly easier with one depending upon your goals(and this is from a big proponent of algal filtration methods).