i have been fermenting for 7 days at 68-70 degrees will it hurt if the temp drop to 60-65 for the rest of ferment
Probably not, depends what you are brewing and what the current gravity is.
Newer, better, more streamlined sig as per the forum police.
Why would you choose to do that?
Hav it in basement and the temp droped was deciding wether to put heat on it ot move upstairs
It may not hurt it, but I would try to keep it as stable a temp as possible.