why are the leaves on the top canoeing and curling down, please help

what kinda light is it under

400 watt hps in a three gal.pot

have you got airflow in there?

yes a 20 in box fan on low

ive had this problem...i think it comes from fluxuating ph...the roots can only uptake certain nutes at different ph levels...thats why it kind of seems like it happens fast...and it seems like more then one deficiency at once.try flushing the plant the get the soil back to neutral then start feeding again..make sure to check your ph before every watering

nitrogen overdosing looks like that, how much is in your nutes, they don't need any now that the stretch is over.

frmrboi said:

nitrogen overdosing looks like that, how much is in your nutes, they don't need any now that the stretch is over.

Click to expand...

i thought that at first also..but each time it has happened it was on a plant that was getting only bloom nute without any N in the mix...and it always happened after it was dry and needing water..not right after a feeding...that why i figured it was a ph and uptake issue

sorry disagree

usually common from over watering and or this is where it gets tricky, could b from air is to dry...
need to add humidity....they will curl and canoe to conserve moisture...

if u have put too much nitrogen u would of got nute burn and yellow burnt tips of the leaves

im just going of me... were all different