Hello fellow growers!
This is my first attempt at growing anything indoor and so far it has gone pretty well. But now I'm starting to have some really bad issues with one of my 4 plants, a Blue dream, even though it's otherwise significantly outperforming the other 3, a white widow and 2 northern lights. BD is a couple of inches taller than the rest. I'm in my 8th week of flower. Let me try to sum up what I've been doing so far.
The setup:
- growing in a 80x80x180cm (2,5 x 2,5 x 6ft) tent in a 30m2 (300+ ft2) room where fresh air is being pulled in only approx 14 hours per day, sadly I have no control over this, I open the windows when possible during the day,
- coco coir with 25% perlite in 10l (2.5gal) smart pots,
- a 200m3/h (120cfm) fan with two scrubbers (I tested multiple ones and having only the one inside the tent doesn't remove the odor, so I had to add another one on the outside - at which point there's no smell whatsoever). I know the air should be pulled out of the room entirely, but right now I don't have that option. A passive intake at the bottom of the tent, about twice the size of the exhaust,
- two Viparspectra 450 LED lights (400W at the wall), I have them at about 40cm (17in) from the tops of the plants, oscillating fan right at the top buds,
- 22C (72F) and 42% humidity slightly below the scrog net.
I've been using GH Flora trio, starting lower but then mixing their recommended strength. One mistake I've probably made was not giving enough plain, pH-ed water between the feedings, I now feed only every other watering, for about the last 5 weeks or so. Adding Cal-mag too, but I started adding it only after about a month into veg. I flushed 4 times through the entire grow, not really flushing but watering with twice the usual amount and getting 1/2 of that out. I see no salt build up on the Blue dream's coir. I always remove the excess to the best of my ability, the pots aren't sitting in a puddle. pH in veg was 5.6-6.0, I now water with 6.1-6.3, the drain was tested yesterday and it was exactly the same as the water that came in, at 6.2. Tap water isn’t too hard, pH 7.
Now, I know this is a problem prone setup, but does anyone have a clue what I could do to try and remedy the situation with the spots and leaf burning? The lower part of the plant isn't showing any major problems, a couple of leaves fall off by themselves every now and then, but it's late in flower. Could it be bud rot? Nutrient lockout? LEDs too close? Not enough fresh air? The thing is, the buds are pretty big, but don't seem to be very frosty. Widow an northern lights have healthy looking buds. I guess, this being week 8 of flower, I can't expect miracles, but still, any ideas as to what I should do to try and squeeze some extra trichomes from that?
Thank you so much for your help!
This is my first attempt at growing anything indoor and so far it has gone pretty well. But now I'm starting to have some really bad issues with one of my 4 plants, a Blue dream, even though it's otherwise significantly outperforming the other 3, a white widow and 2 northern lights. BD is a couple of inches taller than the rest. I'm in my 8th week of flower. Let me try to sum up what I've been doing so far.
The setup:
- growing in a 80x80x180cm (2,5 x 2,5 x 6ft) tent in a 30m2 (300+ ft2) room where fresh air is being pulled in only approx 14 hours per day, sadly I have no control over this, I open the windows when possible during the day,
- coco coir with 25% perlite in 10l (2.5gal) smart pots,
- a 200m3/h (120cfm) fan with two scrubbers (I tested multiple ones and having only the one inside the tent doesn't remove the odor, so I had to add another one on the outside - at which point there's no smell whatsoever). I know the air should be pulled out of the room entirely, but right now I don't have that option. A passive intake at the bottom of the tent, about twice the size of the exhaust,
- two Viparspectra 450 LED lights (400W at the wall), I have them at about 40cm (17in) from the tops of the plants, oscillating fan right at the top buds,
- 22C (72F) and 42% humidity slightly below the scrog net.
I've been using GH Flora trio, starting lower but then mixing their recommended strength. One mistake I've probably made was not giving enough plain, pH-ed water between the feedings, I now feed only every other watering, for about the last 5 weeks or so. Adding Cal-mag too, but I started adding it only after about a month into veg. I flushed 4 times through the entire grow, not really flushing but watering with twice the usual amount and getting 1/2 of that out. I see no salt build up on the Blue dream's coir. I always remove the excess to the best of my ability, the pots aren't sitting in a puddle. pH in veg was 5.6-6.0, I now water with 6.1-6.3, the drain was tested yesterday and it was exactly the same as the water that came in, at 6.2. Tap water isn’t too hard, pH 7.
Now, I know this is a problem prone setup, but does anyone have a clue what I could do to try and remedy the situation with the spots and leaf burning? The lower part of the plant isn't showing any major problems, a couple of leaves fall off by themselves every now and then, but it's late in flower. Could it be bud rot? Nutrient lockout? LEDs too close? Not enough fresh air? The thing is, the buds are pretty big, but don't seem to be very frosty. Widow an northern lights have healthy looking buds. I guess, this being week 8 of flower, I can't expect miracles, but still, any ideas as to what I should do to try and squeeze some extra trichomes from that?
Thank you so much for your help!
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