Can anyone help my girls!

A few of my leaves arent looking so good, the pics posted here the worst ones but i fear that it may just go down hill if i dont do anything

does anyone know whats going on?

Looks like its slightly burned because of a pH imbalance. The burn marks on the edges are signs of too much nutrients and the way the leaves are bending would be the pH im balance. These two usually go together because when the pH is off, the plant will lock out certain nutrients and take in way to much of other nutrients. Flush your plants and check the pH. I just recently found my tap water was at around 7.5-8, so i now lower it to 6.5-6.8 and ive noticed a huuuge difference in the speed of growth

yeh the ph does jump up to around 6.5 sometimes but its been stabalizing, i just checked it yesterday and the highest it jumped was to 6.0 when i have it normally at 5.6-5.7,

the nutes im using are:

iguana juice grow 120ml
liquid karma 70ml
organic b 75ml
sensizym 120ml
cal mag 35ml

im thinking it might be the cal mag because the ratio is like 6-0-0 or something like that seems like i might be giving it to much cal mag and to little iguana juice

heres another pic about 2 weeks old they look a little better then this