Strange rusty patches on leafs and what appears to be yellowing of colas
- Thread starter zoomer428
- Start date
zoomer428
Active Member
Oh okay I was a little confused too. You think that weird coloring may be fading beginning already? I think I still have over a month on them. I actually put the thermostat back up today because I started a couple new seedlings.
zoomer428
Active Member
Its winter here and house temp can be hard to maintain. Plus I was under the idea that colder temps = better terp retention and production? I thought the stress made it produce more and they don't volatilize since the air is so cold
smoke and coke
Well-Known Member
What kind of lights are you using?
DanKiller
Well-Known Member
There is some merit in a very low rh and cold temps when it comes to late flowering, the people over in india swear by the cold nights at the mountains as the factor for the extra frost and trichomes, also here I've seen people do it with success.
Science narrowed it down to 25-30c as optimal range with 30-32c being the best when conditions are fit
You can change bulbs to a higher watt one or lower your lights in order to maintain some degree of growing/budding at normal temps.
zoomer428
Active Member
300w led in this one. It smells so rank.
DanKiller
Well-Known Member
This is a known problem in cold weather, leds are unable to raise temps to a proper setting
That's why it's wise to have a 400w hps for winter
It's a mistake to use under 25c temps for growing, it only applies after the stacking process has run it's course and your focusing on enhancing trichomes and terps, which is the last 2-3 weeks of flowering.
You have to remember that even outdoor in india
for instance the cold nights begin at the end of flower, not during the whole cycle.
That's why it's wise to have a 400w hps for winter
It's a mistake to use under 25c temps for growing, it only applies after the stacking process has run it's course and your focusing on enhancing trichomes and terps, which is the last 2-3 weeks of flowering.
You have to remember that even outdoor in india
for instance the cold nights begin at the end of flower, not during the whole cycle.
smoke and coke
Well-Known Member
I ran into the same problem when I switched to led last summer. I usually run closer to 78 degrees with the hps and when I ran the same temp with led my plants suffered. I had to raise my temp up to between 82 and 84 degrees, and also lowered my wattage down some until the plants recovered. Then once recovered, I would raise the wattage up in small increments every few days until the plants stayed happy. I have used hps since 2009 and back then the mention of led would get you run out of town.
Read up a bit in the led section or grow journals and see what temp and humidity is run at different stages.
SofaKingHigh_
Well-Known Member
You shouldn’t see fade until late flower like week 8-12. Your plants look really good I wouldn’t go too crazy adjusting things. I think others have mentioned already but looks like you were just lacking a little N during the stretch period the first 21 days into flower. The demand for N will drop off after that stretch so I wouldn’t change what your doing and make adjustments for your next grow.
zoomer428
Active Member
I haven't yet. They actually stopped stretching but I failed to feed enough N before switching to bloom which was very apparent. They've recovered now actually looking much better. I hit the top soil with worm castings, watered them in and then mulched with rice hulls. Seems to have helped them in every way. I'm guessing the soil ph was starting to take a hit as well as just general salt buildup plus it was a lil too cold for them. I do want them to fade pretty hard ill drop the temps into the 60s here in like 3 or 4 weeks then.
