Welcome to AFN Bruce, with that size tent and bulb what kind of exhaust or ventilation do you have for that space? Getting your temps right is one of the key things to address BEFORE you get plants in there, reason being is it impossible to kill or harm a plant that is not there

My first 2 grows my plants were severly impacted by heat issues just simply because I had no idea.
The 2 most important things in my Humbolt opinion when you first start your grow is Temperature and PH. If these two things are right then you will get to the stage where you need to feed them, but if they don't get there first few set of leaves you will never need those nutes.
Growing has a lot of components to it so over the last 10 years or so I have learned through lots of trials and tribulations that things must be done in the correct order at first.
Now for your feeding question, I don't know if this is one of the links provided above but this is
Tang's New and Improved Feeding Schedule. It is by far one of the easiest to understand guides for new growers that I have seen. Tang is probably one of the best on here IMO when it comes to growing monster beasts of the highest quality(his grow journals speak for themselves)
You have a great setup and a heck of a head start in finding this forum due to its wealth of knowledge from credible sources, you will do amazing I am sure of it! Ask as many questions as you need to and someone is always here to lend a hand
