Dosing Questions

[Aquattro]

Troy, first you need to detemine if you really need supplements. Is your Ca becoming depleted between water changes? By how much? Dosing kalk is probably all you'll ever need. Some people dose Iodine, but if you decide to do this for some reason, make sure you have a test kit so you know what the levels are.
My opinion on all these additives is that they are only to make the shelf at the LFS look full. I wouldn't dump them in my tank. The exception to this is in the event I have to correct a Ca or alk level problem, which is rare.
All the other junk is great if you need to spend money on something, but maybe buy a new coral instead.
As for the phytoplankton, what are you feeding with it?