Hi,
Im having a bit of trouble with my plants. Im growing 3 KC Northern lights and some of the ends of the fan leafs have curled downwards. Its not happened to all the leafs but most of them. Ill answer some questions below. Hope somebody can help

Are you growing designer genetics or bagseed?
Kc NL
Are you plants from seed or clone?
Seeds
How old are your plants total?
about 5 weeks
Are your plants in flower?
3 days in
How big are the plants (in height and # of nodes)?
about 3 ft
What type of medium are you using and what is its makeup?
guanokalong all mix
What size planter are they in?
12 litre pots
Chemical or organic fertilizer?
no fertiliser yet
How frequently do you water and how much do you use?
every 3 days approx when needed
How frequently do you feed them and how much do you use?
Not fed them yet
Have you seen any bugs in your garden?
No
What size light are you using?
400w hps
How big is the room they are in?
3ft deep, 5 ft long, 5 ft high
Do you have ventilation?
A passive intake, the temps fit at about 15 at night and 30 during day.

When you water every three days approx, has the compost dried out, but not so much that it's cracked away from the pot sides, or is it still damp?




Have they just been repotted into those 12l pots with that mix as 5 week old plants?

No there normally still damp but not soaking wet when I water them.

Yeah I just re-potted them about 10 days ago into the guanokalong, before that they were just in ordinary peat free compost. They really took off as soon as I transplanted. Do you think it might be a nutrient thing? Im going to try and get some pics.

It maybe too hot for them, but it does sound like over watering. You need a follow a wet/dry cycle.

Those 12l pots don't need watering every 3 days.

As Bish States!

i would simply do the weight test and water accordingly!

Bud!

Thanks guys, going to go easier on the watering in future!