.

i think i've used that soil before... burned the hell outa my seedling only a few made it (2 outa 10) dont use any fert for the first few weeks it already had fert it it...

 

Never, no one on here is going to have anything good to say about ANY MG products. Take it back and get something from another company.

 

Check the cotyledons like you normally would to decide when to start feeding. You are a bit heavier on the first feeding than I would be.

I generally start with 1/4 tbsp per gallon in the beginning and step up to full dosage, especially if not familiar with the strain being grown.

That's not true. My gallery shows the product of Miracle Grow products. Not good to over generalize, as a rule.