Leave tips curling down?

Like the title says my leave tips are curling downwards! This has just happened over the last 2 days and I have searched and haven't found any answers! Please help thanks

Same here.. please help! thanks guys..

it cud be a number of things, need mre info, soil r hydro?,, temps an humdity?? ur ph an ppm?? wat nutes light space and air curr?

In my case - I'm in Soil 2nd week of veg, 600 watt MH, 7 liter pots, Temps are between 65-80 Humidity 35-45%, Only have exhaust fan and an oscillating, 10 sq foot closet, Don't know PH or PPM. Haven't started w/ Nutes yet.

Only one of the plants is doing this, all the others are fine. I haven't watered in about a week because the soil is still moist.. Moisture light isn't going off either.

could be lack of c02 and fresh ntake of air, how many plants hw u n ur grow box, see it could be bcause of the plants are getn bigger thy need mre! maybe leave the closet door open 4 1 day, and see if thrs an improvment dudder

I wouldn't call them big yet.. lol, as seedlings they were in cold temps and only under 64 watts of flouros.. I've left a couple seltzer bottles in there.. dunno if that helped.. I open the door frequently and i believe the exhaust fan is pulling in fresh air.. I think I need an intake though..

right now I have 13 plants in there.. bag seed so hoping for about 6 fems.

u shud make a co2 bottle for ur growroom 2, 2liter milk carton and fill it 3/4 of warm water 1cup of suger then shake until disolved then add yeast 1/4 cup, shake lik mad then add a small amount bread stab a hole in lid an place n ur grow room are beside ur intake fan when u get 1, if ur keepn it n growroom keep up high are use a straw co2 sinks

i wud keep the closet door open 2 nite dubber and c ir thrs an improvement, if nt the plant will start to show more symtons then u can get a bettr insite, hav u any pics?
kenbarlow666

but it mre liky 2be the ph in the water, are u using ro water are tap water??

tap water, but i have a well so no chlorine.. I bought the house recently and it was very good quality when they tested it. I've been lazy about testing the ph..

tep u shuld def invest in a ph tester, hav u any pics dubber?

I'll get some updated ones and closer to the plant in question.. last ones I have are from a few days ago.. they've done a lot of growing since I put the MH light in there.. lol

It's the one on the right with the cube in it as a joke.. we just wanted to see if we could revive it.. and it kinda worked!

I had the same problem, Im growing Hydro.............Deficiency is Mg, Ca and K. Mine was only Mg and K. Leaf tips pointed straight down and they will never go back up. Also check your leaves closely, in between the serrated edges you will see Chlorosis which will turn a brown color. Look for mites to

this was happening to my plants to i think it was because the lights were to close and the were getting to much heat

My setup is a 12x8 room with exhaust and intake fan 1000w mh and oscilating fan!

Also growing in soil root growth is still great I transplanted 3 days ago and already need to transplant! I think mine might be because of over fertilizing and watering! My new growth is kinda yellow?