I just set this up last night. The output from the Harvester is split and sends melon slices and pumpkins to a pair of cyclic assemblers which turn those into seeds. BC pipes open-air dump the seeds onto a conveyor; the same conveyor that is carrying netherwart, carrots, potatoes, etc. Oh and another branch of the Harvester output drops cactus in a Powered Furnace to process it into Cactus Green, then on to the conveyor.run a conveyer belt over an item router
then placing a bioreactor next to the item router.
open the item routers interface and click reject non-mapped mode
then map the items you want to go to the bio reactor
route items to conveyer belt.
watch as the bioreactor fills with one stack of each type of item only despite having free space.
The conveyor is only two blocks long right now, and overflow lands in a hopper feeding a diamond chest.
The only thing I am doing by hand right now is wheat seeds. The Bioreactors I'm feeding are automated for 8 kinds of inputs, and if I want 9 I go hand-harvest some wheat seeds.
Someone mentioned that IC2 crop sticks will grow cocoa? If that's true, I'll probably switch out some of my melons (which i have a huge surplus right now) to cocoa and stop using wheat seeds.