notacriminal
- 26
- 3
I've got a bit of a problem. My fan leaves have been turning yellow over the past 5 days, with one of them having some heavy curling today. The tips also looks slightly "burnt" on some leaves..
Bud growth has also seemed to slow down to a near halt, if not completely, although it is still forming trichomes from what I can see.
I'm wondering if it's a nitrogen deficiency, a root problem ( i had what i assume to be gnats for a couple days ) or if it's just because I'm in late flower. Harvest day is an estimated 8 days from now.
The strain is an Auto Speed Bud on day 45.
It's worth noting that, going through my picture log, I can see these problems started immediately the day after I watered on top of diatomaceous earth. My diatomaceous earth has a mildly deodorized smell to it, so I'm a bit worried it's contained something that's harmful to my plant. Package only lists "90% pure diatomaceous earth, 40-50% silica". It is sold as a nutritional supplement from a local health store.
Could it be that the diatomaceous earth has blocked out nutrients for my plant?
Also worth noting, this is a bit of an experiment in that I haven't used commercial fertilizers. I've used diluted urine and boiled crushed sunflower seeds exclusively, which hasn't resulted in any sort of deficiency, 500ml per feeding. I've also always adjusted the pH to be around the 6.6~6.8 range. I watered with this solution again yesterday for the 3rd time. The other times it has had a noticeable increase in growth, but this time it didn't seem to do much.
I water every 3-5 days, after the top inch of soil is dry, with pH regulated tap water, leaving it out a day or two to let anything nasty disperse first.
There is also a layer of perlite on top of the soil which has turned faintly green/blue after being watered a couple of times.
I've attached a picture showing the plant as it was as of today. You can see the curled leaf in the lower left.
The thermometer is off by 2-3 celsius, and the light has been off for about an hour at this point.
Light is a 300W advertised wattage LED, 100W actual wattage.
9L pot using standard potting soil. Plant has also been lightly trained.
Hope you can ease my mind a bit. Thanks.
Bud growth has also seemed to slow down to a near halt, if not completely, although it is still forming trichomes from what I can see.
I'm wondering if it's a nitrogen deficiency, a root problem ( i had what i assume to be gnats for a couple days ) or if it's just because I'm in late flower. Harvest day is an estimated 8 days from now.
The strain is an Auto Speed Bud on day 45.
It's worth noting that, going through my picture log, I can see these problems started immediately the day after I watered on top of diatomaceous earth. My diatomaceous earth has a mildly deodorized smell to it, so I'm a bit worried it's contained something that's harmful to my plant. Package only lists "90% pure diatomaceous earth, 40-50% silica". It is sold as a nutritional supplement from a local health store.
Could it be that the diatomaceous earth has blocked out nutrients for my plant?
Also worth noting, this is a bit of an experiment in that I haven't used commercial fertilizers. I've used diluted urine and boiled crushed sunflower seeds exclusively, which hasn't resulted in any sort of deficiency, 500ml per feeding. I've also always adjusted the pH to be around the 6.6~6.8 range. I watered with this solution again yesterday for the 3rd time. The other times it has had a noticeable increase in growth, but this time it didn't seem to do much.
I water every 3-5 days, after the top inch of soil is dry, with pH regulated tap water, leaving it out a day or two to let anything nasty disperse first.
There is also a layer of perlite on top of the soil which has turned faintly green/blue after being watered a couple of times.
I've attached a picture showing the plant as it was as of today. You can see the curled leaf in the lower left.
The thermometer is off by 2-3 celsius, and the light has been off for about an hour at this point.
Light is a 300W advertised wattage LED, 100W actual wattage.
9L pot using standard potting soil. Plant has also been lightly trained.
Hope you can ease my mind a bit. Thanks.