interesting...I have had some concern over that as well......the temp varies between 55-75 ?
mine did that when my closet got too cold...I had not turned a heater on yet, but when I did it went away...
thanks, man. I have seen that before as well.
I'm no expert but when my plants experienced a little nute burn the tips of their leaves did the exact same thing. Best of luck tahoe!
hey Skunk. thanks for the feedback. this does not seem to be the droopy overwatering type, at least in my vast experience....hahahaha. only taking that from all the photos on here I've seen. the moisture column in the soil is what I would term as typical damp, with drier at top.
the o2 thing may be the case, but the pots are quite loosely potted.....yes there is perlite in the soil.
I am not using any other supplements.....water (with precisely) measured nutes), light, good soil and good air.
as above the lowest temp is ~55F (12C). this morning its 58F (14C)
the interesting thing from my perspective is that the plants are otherwise so healthy looking, no nute burn, luch green, firm leaves and stem, very stout and robust growth, new growth is highly prolific....just the tips (as in photos) of some leaves (and not all leaves) curling in....but curling in rather dramatically....I am a little puzzled.....but I guess the best is that I just watch and listen to my soul....
Both usual culprits have been mentioned... k deficiency, and overwatering...
Of course overwatering could mean that you've just saturated the medium, and the plant, after drooping a little, will be all perky the next day.
Are you using any supplements, like calcium or magnesium?
I've never seen plants hook down like that in the cold, but then maybe I don't know what 'cold' is, if you catch my drift.
It could also be an oxygenation to the roots problem, did you pack your pots loosely? Another good trick I used to do as a soil grower, is to tap the bottom of the pots on the floor before a watering. The medium is dry, and lifting the pot and tapping it off the floor a couple of times helps to loosen up the soil again before you water. Helps to create air pockets.
Have you got perlite in your soil?