What up with my grow

HOPE SOME 1 CAN HELP LOOKED AT MY GIRLS AND IT SEEMS LIKE THE TIPS ARE DRYING UP BOTTOM LEAFS ONLY THEY ARE UNDER 125WATT CFL FOR vegetative growth THEY ARE IN PLAGRON LIGHT MIX SOIL IONIC FERTS BUT ONLY ADDING A SMALL AMOUNT FOR NOW LIGHT IS ABOUT 4 INC FROM TOP HAD A SMALL GNAT PROBLEM BUT SEEMS TO BE UNDER CONTROL NOW THIS IS MY FIRST SOIL GROW SO A BIT OF A NOOB ON THIS FRONT BE VERY GREAT FULL IF SOME 1 CAN HELP

Sorry romie i wouldnt b ablre to help u with that IMO it looks like a deficiency but ive never even heard of PLAGRON LIGHT MIX SOIL, other than that man urs girls look healthy as can be,
and i jus wanted to state that if u drew ur avatar that shit is awsome Good luck

Thanks for looking cheeba just need to get this fixed asap