I'm gradually adding more SPS to my tank, to the point where you might call it an SPS tank, except for the fact that at the lower depths (I have a 28" deep tank) where I still have some really nice zoo colonies. I've heard mixed responses to my question "How will these coexist"? The answers range from 'get the zoos out of your tank' to 'as long as they're not touching', to 'the zoos can grow right around your SPS without a problem'. I have a pretty good skimmer but want some definitive feedback before I consider doing anything else.