Thanks Sackoweed!
jed; I have used various mediums before transplanting into the troughs, rapid rooters into 70:30 coco/coarse verm, current grow was 50:50 perlite/coarse verm. Both times, once transplanted into the troughs I fill them 100% perlite.
As far as roots competing, might be a concern if they were close to being rootbound when finishing. After inspecting the root ball after each grow, they are not even close to being rootbound. Maybe if they were vegged for a few more weeks in the troughs they might get rootbound by the end of flowering.
jed; I have used various mediums before transplanting into the troughs, rapid rooters into 70:30 coco/coarse verm, current grow was 50:50 perlite/coarse verm. Both times, once transplanted into the troughs I fill them 100% perlite.
As far as roots competing, might be a concern if they were close to being rootbound when finishing. After inspecting the root ball after each grow, they are not even close to being rootbound. Maybe if they were vegged for a few more weeks in the troughs they might get rootbound by the end of flowering.