Fantastic study DT. Thank you so much for sharing! It does say a lot about the keeping of non-photosynthetic clams, which I suppose could be brought to the discussion of keeping photosynthetic clams, on the assumption that bivalves do eat similar diets, Gulf, Atlantic, Pacific (which I do not know nearly enough to make that assumption, and never would personally, but for the application we're looking at today, sure, let's assume the diets are the same)
So if you're going to try to dose something I would highly recommend dosing DTs Phytoplankton. If you're looking for increased coral growth though, I still stand that phyto won't help. But I have heard good things about DT's oyster eggs with SPS, LPS, softies, basically everything that isn't a non-photosynthetic bivalve. I'd like to see another study if there are any on that (I like reading studies, sorry!).
We're definitely off topic from the original question posed, so sorry about that! Good information in this thread though.