Plagron feeding schedule for Big Bang Auto

Hi Folks

I've looked around google but cant find the answer i'm looking for

I'd like to know the "optimal" feeding schedule for Big Bang Auto by Green House Seeds, using the following Plagron products:

Terra Grow
Terra Bloom
Pure Enzyme
Power Roots
Green Sensation or PK 13/14 (yet to decide)

Should I use the Grow for the 1st 3 weeks then switch to Bloom?
Or use Bloom right from the start?
A mixture of both?

I'm growing in 3 gal pots in Canna Terra Pro soil

Also this is my 1st Auto grow so any other relative advice would be appreciated

Thanks

i start bloom nutes after vertical stretch has stopped
it will preflower around 3 weeks and then continue's to veg for a few more weeks before it actually starts to flower
start all nutes and additives at 1/8-1/4 strength and work up if you burn them early they may not recover very well before flower .......
the reason there is no set in stone feeding schedule is because the feeding need's will vary plant to plant even if theyre the same strain