So just a couple questions b4 i begin.... im going to germinate in paper towell...have done many times for backyard plants. kk so now i have a 1/4 inch taproot showing and im going to put it in a treated 1" rockwool cube. does this cube go into a humidity tray or streight into bubble tray? If humidity tray can, it go under my mh as long as the light is high above tray? then does the 1" cube go into the 3" cube and into bubble tray after 3rd leafset? also when do I introduce my nutes? Setup: 4'H x 30"W x 26"D 250watt mh/hps 130cfm exhaust (squirrel cage) & two 2 1/2 inch inake holes Two trays each with bubbledisc white widow seeds blueberry BC seeds DR. Hornby Iguana Juice grow/bloow Rockwool growing medium missing anything? I have been reading nonstop for 2 1/2 days...smoke ...read...smoke...read...ect. GS has been a so helpful in my transition indoors!!! If you have seen a thread that clearifies these few questions, just point the way.... Thank all you helpful growers