Minor problem, but haven't figured out the solution, HELP!

I'm having a small problem, in the picture the taller plant (Name - Kona), her leaf tips are curling down. There's no signs of nute burn of any kind, nor nute deficiency (burns, discolored spots, weak stems, etc...) Although I have noticed the new growth (the 2 newest leaves forming off the top colas) tend to be VERY bright green, for the first few hours after the lights have turned on, so I'm guessing they get really bright during dark hours. That made me believe it might have something to do with Nitrogen def or tox, not sure.

I Just put my plants into 12/12 on the 28th, today is the 30th. I've already given the smaller plant (Name - Lauren) a half dose of FF - Tiger Bloom, but haven't yet on Kona because I had to water a day before 12/12. She'll be ready for another feed Friday or Saturday.

I've only given maybe 2 half strength doses of FF - Grow Big all through veg (5 weeks) and I'm using "Roots Organic" Soil from Aurora I believe so I didn't fert for 3 weeks. They're under a 2ft 4 bulb T5 and 2 x 40w CFL. I water with distilled, and I've given a 1/2 tsp of Epsom Salt about a week ago.

I've confirmed Lauren a female (the smaller plant), and I'm leaning towards male for Kona. I've included two pictures of the pre-flowers, can any take a guess???

You know that as soon as you determine that konas a male you need to separate them right? Your plants look good. Leaf curling and bright colors are a sign of nitrogen deficiency so I would carefully introduce an 1/8th strength solution next couple times you feed it. Also dont foliar feed it till this problem concludes.

io cant tell the sexes from those pics, what strain... looks alot like my plants... i think i have some N Lights

hoagtech said:

You know that as soon as you determine that konas a male you need to separate them right? Your plants look good. Leaf curling and bright colors are a sign of nitrogen deficiency so I would carefully introduce an 1/8th strength solution next couple times you feed it. Also dont foliar feed it till this problem concludes.

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Cool, I'll add 1tsp of FFGB along with the normal 1tsp of FFTB. I'm sure you're right about N def, the plant is vigorous, I've topped it once already and I'd have to top a 2nd time, just to keep the 2 plants somewhat even. I haven't pruned the smaller one at all. Ya I have to chop the male down because I only have one grow box.

BTW, How do I mix the 2 nutes? Do I mix FFGB and water it, then mix FFTB and water? Or do I mix one in then the other in the same water...

thewinghunter said:

io cant tell the sexes from those pics, what strain... looks alot like my plants... i think i have some N Lights

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Just look very closely, you can see the pistils in the 3rd pic! As for strain, I wish I knew... It was bagseed I got from a friend, but he gets all his herb from a vendor so I know it's legit... All I know is the taller one is a 75% Sativa 25% Indica hybrid and the smaller is a 75% Indica 25% Sativa hybrid lol...