hi all im not in soil but in hydroton rocks and me got same problems im still in veg {big plants} my leaf also curls downwards and around the sides of the leaves curling upwards also starting to get white specks down the middle vains not all leaves mainly the middle to lower leaves. i have root rot controling it the best i can plants look healty nice and green. i never had this prob untill i did this? iwas treating my plants for root rot with a thing called bounce back{here in perth australia} works well but i think i overdoesd my plants with it also the curling leaves has started at the tops of lower branches flushed 4 two days still healthy but still curling. my system..
3 plants
2 600watt hps
3 50liter pots {plants grow in}
100liter res{i dont use the whole 100liter}
p.h around 5.5 {using a chep dye thing and test tube}
e.c 2.4 drops to 2.0 over the week
temp 27deg
water temp 22
humidity 50 to 60 lights on
hydroton rocks {orange round rock things}
water 1hour on 2 hours off {recycling system}

also getting a lot of whiteflys{well little flying bugs that come out of my rocks} any idears on how to fix these probs would be fantastic

peace...pot...patience

the ratman
perthkiwi Reviewed by perthkiwi on . AHH help. Super leaf curl Hey guys. 2 of my 3 plants are showing strange leaf curl. The whole leaf is curling downward not just tips. Also the leafs curling seem to be just the budding leafs not the fans. 1 Ph is good. 2 Watering on schedule. 3 Been watering past few days with only water. no nutes. 4 Bottom of pots dont seem to have roots trying to bust out. 5 Plant seems to be sativa. Plz help guys. Rating: 5