yes it is farmer.. i actually had that problem with my clones.. they rooted in about 8 days and i had them kept in a humidity dome.. sometimes id take it off, once a day or so and they were doing very nice.. well I thought maybe they could use some air to build up the stems.. about 1/2 hour after the fan was on them, they all looked dead! very droopy and dried up.. so yes, a fan will dry them up..
btw, i saved them by misting them and putting them back into the humidity dome