Trouble with clones

So I got ten clones. Got them under tek4. All ten appeared healthy and well rooted when I got them. They were brought to me from a friend of mines grow. 7 were around 5 inches tall the other two were a few inches taller. The room I put them in was 60 degrees for 2 days and all ten plants were shocked. All leaves were curling/drooping firmly. I got a space heater and have had temps at 75-80 for the last five days. 7 have bounced back and appear to be healthy and growing but the two tall ones and one other have not and appear worse daily. There in rockwool (3x3) and I water once a day with 1/4 strength advanced nutrients grow. I am truly stumped as to why they aren't bouncing back. Any help would be great.