general N-P-K fertilizers

[man]

Hey Ron, quick question here. I'm currently using a general N-P-K Bloom fertilizer. I'm wondering if this is the way to go? I've heard talk of epsom salts and other things that go into a different kind of solution. Could you give an opinion on general N-P-K fertilizers and also give me an idea of what a good alternative Bloom solution would be comprised of? Thanks my man.