Not sure what soil you are using, but they might need a little boost to green up. N , Cal, Mag. If th soil has nutes already, then wait a bit and see if they fully recover, if not give em half recommended dose nutes. I kinda did the same thing on mine, I let em stay in the small pots too long and they started starving. Then they didnt bounce back like normal repot into final pot so I gave em a kick, now they are kickin ass. Sealing the room will help you with pests. Id saturate the walls with pesticide then seal it with panda paper leaving no creavaces.