White widow autoflowers and RT420 ICE plant

iv up the nutrients to 3ml per litre of water as the lower fan leaves are yellowing and die in off! also no sign of the other WW being a male so far but still really late in flowering compared to the rest,the 6L pot plants are really small,wont use these with autos again if i ever do go for autos again,just been giving the ICE plant water and just pinching the tops instead of bending them over,peace