I started with three atomical haze seeds.
I germinated and planted two seeds in a soil composed of equal parts homemade organic compost, perlite, and coco coir. Soil pH was about 6.4-6.5 and recently, on the 17th day, I successfully transplanted to larger pots. Here are photos I just took inside the grow tent on day 19 (the white light doesn't do justice to the vivid green when under warm lights)
Plant 1
Plant 2
My question is about the third seed, which I planted in a mix of perlite and commercial organic soil. This plant is notably smaller than the other two, and is still in the original cup now on the 19th day.
My goal with this third plant is to use fertilizers instead of compost for nutrients to see the difference.
The cotyledons turned yellow on all three plants, but on this third plant the first set of true leaves is now yellow and I see discoloration on some of the other leaves, as you can see below
Here is this same third plant in different lighting
In these photos, it doesn't look as yellow as I perceive it in real life.
You can see the discolorations from the top view.
My question is: is there a problem here?
By the way, the plants look so much more beautiful in this alternative lighting (overhead warm lights). I didn't take a picture of the first two because I don't feel like lifting their new containers out of the tent for now, but I can do this if anyone is curious.
Additional details
I'm using Migro Aray 3 (250W) running at 60% 40cm above the plants, as per the user manual.
The tent is a 1.20m x 1.20m Vivosun air-cooled with an AC infinity intake and exhaust, plus two small Vivosun oscillating fans inside.
This is my first grow where everything seems to be in place. Technically, it is my second grow, though in my first grow attempt earlier this year I unfortunately found out that my lights were way too strong for seedlings and early vegetative stage (Apache Tech AT600 monster lights, no dimmer, burning up the baby plants even 1.5m above them) and so I had to postpone to now.
After noticing the yellowing plants, I did a bit of research and figured the third plant could have a nutrient deficiency. I don't know how good the commercial soil mix is. So yesterday I started adding Remo nutrients to the water for the third plant (micro, grow, velokelp, magnifical).
Is this a good idea at this early stage?
Finally, can I consider all three to be in vegetative stage already? I am asking so I can confirm that I can be using the Remo nutrients, as per the following chart from their website
I germinated and planted two seeds in a soil composed of equal parts homemade organic compost, perlite, and coco coir. Soil pH was about 6.4-6.5 and recently, on the 17th day, I successfully transplanted to larger pots. Here are photos I just took inside the grow tent on day 19 (the white light doesn't do justice to the vivid green when under warm lights)
Plant 1
Plant 2
My question is about the third seed, which I planted in a mix of perlite and commercial organic soil. This plant is notably smaller than the other two, and is still in the original cup now on the 19th day.
My goal with this third plant is to use fertilizers instead of compost for nutrients to see the difference.
The cotyledons turned yellow on all three plants, but on this third plant the first set of true leaves is now yellow and I see discoloration on some of the other leaves, as you can see below
Here is this same third plant in different lighting
In these photos, it doesn't look as yellow as I perceive it in real life.
You can see the discolorations from the top view.
My question is: is there a problem here?
By the way, the plants look so much more beautiful in this alternative lighting (overhead warm lights). I didn't take a picture of the first two because I don't feel like lifting their new containers out of the tent for now, but I can do this if anyone is curious.
Additional details
I'm using Migro Aray 3 (250W) running at 60% 40cm above the plants, as per the user manual.
The tent is a 1.20m x 1.20m Vivosun air-cooled with an AC infinity intake and exhaust, plus two small Vivosun oscillating fans inside.
This is my first grow where everything seems to be in place. Technically, it is my second grow, though in my first grow attempt earlier this year I unfortunately found out that my lights were way too strong for seedlings and early vegetative stage (Apache Tech AT600 monster lights, no dimmer, burning up the baby plants even 1.5m above them) and so I had to postpone to now.
After noticing the yellowing plants, I did a bit of research and figured the third plant could have a nutrient deficiency. I don't know how good the commercial soil mix is. So yesterday I started adding Remo nutrients to the water for the third plant (micro, grow, velokelp, magnifical).
Is this a good idea at this early stage?
Finally, can I consider all three to be in vegetative stage already? I am asking so I can confirm that I can be using the Remo nutrients, as per the following chart from their website