Just take into account the amount of stretch and if the strain is know for single colas or strong lateral branching. If i was running a whole tray of girlscout cookies id pack at least 30 into the tray becase they grow mainly straight up and down with not a lot of branching.... so id say its mostly strain dependent. What kind were you thinking???
the seeds i bought White Widow and got free OG kush and Afghani all are known for main single cola from what ive researched on the internet and bought them just cause the main cola and minimal brdanching cause ive been plaining on the SOG technigue all along. Just dont want to overcrowd since i only have a 600w ballast and bulbs but def most important thing is yield for my broke ass this time around so I def wanna pack in as many as possible for sure...what should i put the Pro-Mix in you think to make it into a mother plant? will soon be getting a tent or making sectioned off part of my roomfor the clones and mothers...once again thanks so much for the help wish i could re-pay you somehow...really aprreciate it bro