So I was at the LFS today getting .....so while I was there he asked how I was feeding and I told him that I had root ferts for my vals and my swords and that I was using liquid ferts for the rest and he told me that all of those ferts are a waste and that it was all for algae.....I just want to make sure I'm on the right path here with the high tech setup
You are on the right path so don't allow that LFS "expert" to mislead you.
I suggest you give that LFS plant "expert" the link to the TPT Fert and Substrate Sub-Forums and politely suggest those are studied. If for no other reason than respect for the hobby.
Maybe there is Evil Intent, bad advice + dead plants = more plant sales