Try not to incorporate too many additives...... your tank is fairly new? How long has it been up and running? I think for now.... if you have a tang or have enough fish load in your tank, you don't need to feed your corals. Fish poop will feed the corals itself, if there's something in particular that needs to be fed daily, try target feeding w/ a pipette or tubing of some sort. Also shutdown the circulation until the coral/corals get their feeding. Then turn everything on and the skimmer do its job. You should be getting some skimmate (dark as ice tea or darker and foamy).