vmvm - I had another idea...
I don't know what your tank design is like so you may or may not be able to do this, and I have a BioCube so I may or may not be able to either, for that matter, but I'm thinking I could try to clip this auto feeder in a spot where, instead of feeding the tank directly, it dumps into the return.
My thought is #1 - that the return pump may suck it down into the water faster than it would saturate on it's own, and #2 - that I could T the output with locline to have at lest one outflow thing pointing directly toward the coral I'm trying to feed. The powdered food is so small that it *should* go right through the return pump and out - in theory.
I also searched for hours last night for different fine particle coral foods (when I say "fine" I mean finer than 100microns because I actually believe, after researching a bit further, that the Roids and some others are actually too big for the smaller polyped NPS). The ReefPepper is only 5-20microns so that would be ideal - IF they'd ever get it back in the States!! - and I also found another, called H2Ocean Reef Paste that you just roll into a little ball and either stick on the tank wall or, in this case, I was thinking also just throw in the return chamber, and it breaks down slowly for a slow-release feeding. Both of these foods seems about impossible to actually acquire in the States but I have found a UK site that ships internationally that has all kinds of foods I've never seen before but would love to try, each by dumping straight into the return.
Anyone see a problem with feeding the return instead of the coral directly? I personally am trying to feed a gorg and just make it a LOT easier on myself to do so.