@MumenRyder give this a read
As for bugs… mulching iver your soil with straw helps with that problem as well as keep a live beneficial environment beneath it.
Takes a run or 2 to get things how you like them as everyones different but once its going its going and your overheads come way down too as you can constantly re use your soil. Costs a little to set up but then its done. Nothing better than soil grown organic bud
Good luck