hey 6, thanx for the thoughtful warning. I should explain what I am doing: I am trying an experiment in which I will maximize my algae biodiversity into as many genera (and species within) as I can obtain and during this, not let any one algae get to dominant proportions.
My goal is to see if I can get a certain stability WRT nutrient absorbtion and plant mass, that both keps the fertilizers down AND never limits out any key nutrient that would cause a particular algae to crash. So I am encouraging several potentially obnoxious algae such as Dictyota, Briopsis, C peltata(racemosa var). They aren't obnoxious when they don't really spread much. I also have 6 boxes of water on my system so I can actually evacuate corals to somewhere else if it looks like there will be algae-coral disputes.