Simple answer is soil.
Being the pennie pincher I am. On hand I have some soil from last run that was used. So i will be using FoxFarms with a mix of used and new soil. with plenty of pearlite. I have a good size bag of worm castings another of bat guano and some dolimite lime too. which I am sure would help if I knew how to amend it into that used soil.
Currently I have only 2 gallon plastic pots and 5 gallon
smart pots on hand.
I will have a max of 8 plants (7 sprouted) Being Auto's I figure plant size will be smaller. Hopefully I have enough room. Was really shooting for 4 or 5 but the 1st 5 seeds all died before giving me a root to grow, So I dropped 8 wanting to make sure I got the ball rolling before more time past.
Hopefully use no more than 2 600w lights
Thank you
@incogneato for the prayers.