Straight talk on nutes. PLEASE!!!

I have seven day old seedlings doing well. I am not looking to feed them just yet but would like to know is BIOBIZZ big grow ok. I am growing in biobizz light mix and I do not have a ppm or ec meter nor do I intend to buy one at this point. I have digilux MH bulb, lumatek ballast etc. I have a digital ph meter so I will just be measuring by eye for my FIRST GROW and do not care to much for anymore overcomplicated information (I have done ENOUGH reading on due diligence). I do not have a huge amount of money left to spend on nutes. I get the impression that's lights, ventilation and the environment is the most important thing. So can I use JUST Biobizz big grow for first feeding and in 2-3 week all mix for veg. I may buy some fox farm tiger or big bloom but right now I just want a freaking straight yes or no. Thank you.

Yes it's fine to use, I've used biobizz nutes/soil for years. I use bio grow from week 3 in light mix and week 4 in all mix, I also keep using it until 2-3 weeks before harvest@ 1ml per litre.

soil yes /hydro no.. hydro needs more micro nutrients to grow healthy plants. soil has micro nutrients in it already.. so KEEP ON GROWIN

THANKYOU! Its very confusing trying too workout what's what with nutes, I've done so much reading I confused myself. Thanks for the straight answer.

Also am I correct in thinking that the dose stated is per week not per feed. So if I give 1ml per litre would I divide that over 2-3 feed then flush.