Fox farms and adding kelp tea

pretty much wondering what y'all think . I started my plants using only kelp tea mixed with rain water at a ph of 6.7
I figured that wasn't going to be giving it all its needed mutes and started giving it FF grow big, along with a small percentage of Cal-Mag since my soil I'm using didn't have much of anything. I'm using around 30% PromixBX, 20%perlite, 40% black gold moisture control, and a small bit of chicken compost . Things are going great and I probably shouldn't mess with it but I know kelp has nutriants that can fight infections and have great great minerals and properties . So, should I mix in my kelp tea also ?

I use a lot of kelp start slow if u ph u water try going little lower,i don't ph any thing grown in soil. promix has buffers in it .I also have great water