Im glad to see you got everything figured out and it looks like youre setup pretty well moving forward! Nice equipment choices. As to the pellets, I dont run them so dont use me as a guide but ive seen people go both ways. SOme argue that you want to run them from the start as to not shock the system when bringing them online with things in the tank, where others feel that in such a clean environment such as a new setup that running them once they are actually needed makes more sense...if it were me id wait til I needed them when I start to register nitrates on a weekly basis then start them slow.