Leaf Spotting

I am having problems with a couple of my plants. Spots started to appear on the lower leaves a couple of days ago. Today I saw that other plants are starting to display this problem so I decided to get help.





Info on my setup. These plants are a mix of indoor seeds from bcseedking. The plants are 3 weeks into 12/12. They are in 1 gal pots with foxfarm ocean forest soil. I lightly fertilized last week with 5-5-5 organic nutrients. I water about every 4 days with RO water.

On a side note, I have been dealing with what I believe is a Mg deficiency for 2 weeks. I went out of town and my babies suffered (Will never do that again). I am trying to remedy this with cal/mag when watering. Here is a pic of the family after I got back from my trip.



Higher resolution pics are in my gallery in case you need to see the leaves closer.

i'm confused. are those from seed?

Yes they are from seed. Sorry for any confusion

they look way to young to be on 12/12 and even to young to be feeding. i could be wrong.

I am sorry, I waked and baked too much this am.

They are on 18/6. Oops it was a typo.

whew, i was worried. i don't know about the spots but it looks like they could start to use a little nitrogen. maybe start with 1/4 strength. the spots, i don't know. ???????????

they do look kinda small to feed exept the bigger ones which sprouted before.

I gave 1/4 strength nutes last week and they started to green up. I need to water today and was thinking about adding 1/4 strength nutes but I was worried about burning the plants.

Dr High said:

they do look kinda small to feed exept the bigger ones which sprouted before.

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I started the nutes when I was having a problem with yellowing leaves on the bottom.

I have those same spots and would love to know what they are. My big plant(5 feet) has them but the spots are only on leaves closer to the ground. I tend to think it's the plant pulling some kind of nute to feed the top growth which all looks lush and green. So I've started nuting just a touch extra. But I'm just guessing.

LocoMonkey said:

I started the nutes when I was having a problem with yellowing leaves on the bottom.

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i would feed them. they spots may just fix themselves. are new spots still appearing?

It started a couple of days ago on one plant, now more plants are showing it. So I guess to answer the question, yes more spots are appearing.

LocoMonkey said:

It started a couple of days ago on one plant, now more plants are showing it. So I guess to answer the question, yes more spots are appearing.

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you weren't supposed to say that. lol. i don't know. where is everyone else?

Ive been doing some reading and I think these spots may be due to progressing Mg deficiency. I am going to try a foliar spray of Epsom salt tonight if I don't hear any reasons not too.