help please :-)

any ideas on what this problem could be.. im doing dwc in 5 gal buckets, lit by a 4ft t5, there's 10 plants under it and it seems like all 6 on the right side either have bent leaf tips or browning leaves like in the pic..but the others on the left look great

try rotating the plants see if that has an effect.

Wavy, deformed leaves are caused by either overwatering or a wrong pH. Since the second pic shows exactly that, a nute lock out, it's most surely your pH. Check it and fix it.

im with ^ deff start checking that ph everyday,twice a day after a nute change.this is why im back to soil!10 years of this crap.lol

i knew it would become a problem someday...this is my 4th dro grow and ive never checked ph or ppm. guess ive just been lucky to not have any problems up until now. anyone have the hanna 98107? i have alot of separate buckets so a doing the water drops would take forever. but how long does this thing last.. is there tips you have to buy for it or something?