They will survive it just takes more time and I would also add a root rot preventor such as hygrozyme.

I might would fill the tray with hydroton and just bury the 3 inch netpots in. Use the 5.5 next time. Save your self some time.
LOC NAR on probation Reviewed by LOC NAR on probation on . transplanting to bigger pot, need advice Ok ive waiting too long and have a huge root mass down in the res of my bubbler, am trying to move up from 3" to 5".......do you guys take out of small cups or just sit cup in new larger size............should i carefully pile roots around in the new pot and fill in w media or whats best way to avoid damage. i have no choice now but to mash all the roots into the new container, but i guess technically i should have repotted while roots where still growing and not such a large mass. Or should i Rating: 5