i have 10 plants that are at least 2 weeks old and the leaves are starting to turn brown at the ends and spreading through the leaves killing them can anybody help me please

I Think Is To Much Food Or To Little Co2 Or To Much Water

tip burn is a sign of slightly too high ppm when feeding. back off a couple hundred and it should pass.

i know its not to much water but thanks but what do u mean by ppm growbot because on my baby plants its burning the tips then spreading but i have two plants that are two and a half months old but their tip r just slightly burnt u can hardly tell they are

He Means The Food Is To Strong

oh well im used to hearing ph instead of ppm but i was only at 1/4 solution on my nutes but after i noticed the leaves being burnt i did lower it to 1/8 but its only been a week so i dont know... if it doesnt get any better i'll have to figure out what else it could be