Thinking over switching over to flower..

I may lst the top so the rest can catch up. I have a fan circulation on low. My temp stays around 72 and humid at 55. I'm using 400 mh and will be using hps when I flower. I'm using half strength nutrients and using ff triple play. My light us now about a foot and half from light. Pinched the stems a little to try strengthening also. Thanks for all the great suggestions .

Also here's a few pics while lsting

From clones and i didnt grow them up.. i grew them out and super cropped em. broke them in half.. i got 2 brand new plants that are tall tho!