When to give nitrogen

Hey guys. Question on when to give nitrogen. So I'm on my second grow now. My last grow/first grow. I had a severe nitrogen toxicity in flowering now I'm afraid of giving grow big to my plants.. however I want them to flourish durin veg. I am about to transplant my month year olds from 1 gal ffof, into 7 gallon ffof then let them veg one more month then go into flower. However I know ffof has nitrogen in it.. so what's the rule of thumb with nitrogen. Do you just wait to see a deficiency until you give it more? Watch the leaves color? Thanks guys

FFOF can carry a plant up week 5/6 by itself. I would let that feed until it shows anything less. Use Fox Farms feed schedule and start light around 1/4 strength.

What he said ^^^^

FFOF can carry your grow for a long time. Budz has it right the only thing I would add is that you should still be amending with cal mag if you have RO water, and black strap molasses never hurts even in the first 6 weeks of flowering.

N IS A mobile element so the def will start from the base n work it's way up..id suggest canna mono N or if u grind ur own coffee beans the rusks are full of N but n tox is easy to see with the claws..once they show cut back and you'll be grand or tip burn just slow down ur feed..works for me n that's 3 gg4 n 2 dbxl pheno so a few different levels of feed required so learn to read ur leafs bro..I just give more calmag to the gg4 n foliar feed seaweed weekly till I flower then add to alternate feeds oh n I feed veg nutes till week 3 of flowering as alot of growth occurs during that period then half n half then by week 5 flower nutes n week 6-8 pk booster....don't flush either

I like the give them N first week of flower. Then towards the end of flower