When to fertilize. Using Jacks Original.Help!!

So I just transplanted my 10 WW into 5 gallon buckets. They are all about 10 inches tall. Under a 400w mh. I just received my Jacks original and Jacks Big Bloom. When should I start fertilizing? At what dosage? Schedule? I went to their website but nothing... Help me please

If youve just repotted with 5 gallons of fresh soil, you will have enough nutes within the soil for a good few weeks, feed nutes when the plant gives you signs of hunger which wont be yet.

Good lookin out! I thought so but wasnt sure.