Exdus 2nd go around

11/23 Flipped lights end of last week and they started there strech 2 days ago , havent been giving any water past few days anticipating res change, volume dropped to about 2.5 /3 gal and ppms are staying steady every day so they are taking them up. Did nutrients change to boom nutrients with Reservoir change today expecting to see hairs here in the next day or so. All 3 are looking good so far.