Pls need help asap thx

Ive had my clones for about 2 months in veg and they were doin fine just recently they started showing signs of some sort of problem I gave it plain RO water the first day and it still got worst gave it about 550ppm of nutes and it still seems to be going at the same rate it was going with the water only. Please help me I've worked hard on them and would like to harvest em. It's in a hydro system which is why i'm sure it's something with the water cause they all started showing sign at once.

Sorry bout the shit pics. camera phone.

View attachment 1094969View attachment 1094968View attachment 1094967View attachment 1094966View attachment 1094965View attachment 1094964

well go in trim them all back first than What are you fertlzing with

I left em there cause i wanted to show the problem on here but i have been pulling off dead foilage every day as it progressed but to or three do need to be trimmed more than that. right now i've got Dutch Master's Gold Grow A&B with abit of AN CalMag Grow

extremely desperate bump

What is your PH at? I see some canoeing and looks like you have a lockout. A little more info and we can help you out.

Looks like you need to bump up the cal-mag.