You might try pulling your light back just a touch for a few days until they get used to the new lighting.......hps is a big step above your original lighting....I have some new seedlings I just stuck in my hydro and can't use my light on them yet....mh1kw.....even from about 4 feet....have to edge it in bits at a time or they get heat stressed even though room temp is good. . Are they perked up in the morning? Maybe I'm just being paranoid.
Weedhound Reviewed by Weedhound on . 3 blueberry seedlings the two biggest are about a week old..smaller one is just like one day old. Bucket contains four more seedlings.. using 26w CFL's at the moment..got a 250 HPS that I'm going to use in a couple weeks for them. Rating: 5