My friend has two plants in a 12 gallon dwc . One plant was put in a little later and the early one was a dwarf pheno and is ready for harvest . However the roots have twined together and not able to get them out if he was to harvest the small one . Will leaving the roots in there while the big one finnishes ( 3 weeks) cause the roots to rot and affect the other plant . Hope this is as understandable as possible . Thanks "time is of the essence.. Sometimes"