I'm going to assume this is for your 75 gallon correct?
This is my dosing schedule (but modified for your tank size) that slighly overdoses before a large 50% PWC at the end of the week:
-CSM+B Plantex, 2/3rd's teaspoon at water change and every other day
-Mono Potassium Phosphate, 1/16th teaspoon on days when CSM+B is
NOT added
-Potassium Sulfate, 1 teaspoon at water change and every other day
-Potassium NitrAte, I personally do NOT add this because my bioload is large enough to not require dosing. You should monitor your levels for several days after a large water change with no nitrAte dosing. You may or may not need to dose, but its best to get an accurate picture of how much ammonia is being produced in your tank without you adding in more nitrogen. This is really the only fert that can cause harm to your fish due to overdosing (within reason of course), so don't just dump this in.
HTH
P.S. Please note this is a general guideline that should not leave any deficiencies, but each tank and water supply is different. The most important thing is to not let anything bottom out, you really cannot hurt anything by dosing more that required, its just wasteful.