dont worry about it mate, I used to be an og'er too and this site is definately the most responsive I've been on since og went down, and it's getting better too. :thumbsup:

I'm not familiar with the brands you mentioned but I would start out on quater strength - like 150-200ppm and creep it up to full strength over a few weeks, that way any overfeeding will be slight and should avoid your plants burning up too much.

p.s. yeah google is useful, but I prefer letting other people do the search for me

edit:
no need to burn the forum buddy
yeah, I was too polite to say that. ha ha.