Len, I spotfeed my corals with it. Turn the flow down or off totaly if you can. Hammers, Torch's, Hairy shrooms, Pavona's,Cupcorals, Tubastrea's,
larger polyped gorgonians, Ricordea, brain coral, candy cane's, all love the stuff. Just use a pippet with a long section of riggid airline tubing for spot feeding. Release it VERY slowly sothat it lays on the mouth, or near it.
WHat amount to use is realy irrelivent as it totaly depends on how big your corals are and how many of them can actualy take atvantage of it.
Basicly the less the better.
Criss is probably talking about the red poopy fish and inverts put off after they eat it. LOL!