Would I get pretty good results using your feeding schedule with just the 3 part nutes without all the fancy stuff?

Michael, In short?.you can expect good results without the ??extras?.

In long?..there??s very little difference between the two. Quite late in the Lucas thread?..he states (I??m paraphrasing) that the differences between the sources of nitrogen between Grow and Micro might well be a benefit.

Grow
Grow Marijuana FAQ, Cannabis cultivation - marijuana growing tips & photos

Micro
Grow Marijuana FAQ, Cannabis cultivation - marijuana growing tips & photos

Now I??m no chemist, botanist, nor horticularist. But I am willing to take the advice of many successful growers of both regimens. (Both quite successful.)

also do you need to use the cal mag if you are using tap water? also thanks for the link.

A judgement call?..my tap ppm (@.7) is about 98 and I have seen calcium deficiencies in my mom??s using ff grow big. Both of these guys differ some on Calmag+ (Lucas believes that GH flora 3 part supplies enough) I??ll probably use a very light dose.

My take?.Lucas is a fundamentalist, Latewood is more willing to take a chance. And of course?.simpler is easier to understand.

Expect the best,
HMR