i would not wait to weeks to give them fertilizer.. i would give them 1/2 strangth...then work your way up every week for an ex...week 1.. 200.ppm parts... per... mill ...week 2.. 300ppm so on.... or at least a rootcomplex..for healthyer room mass... and the first two weeks is a must that they get proper vit... so good luck dont give up.......... da plantDOC