Weird that you have humidity issues with hydro ...not knowing where you live or the variables in the room your tent is in however, , turning off any fans you may have circulating will help until you can get a handle on it ..?
make sure you have a fan directly blowing on top of that light you have . I use the same one in a 4x2 for veg ...it gets hot and you will want to extend the life of the light as suggested by the mft. and blow that temp around ..