What does this discoloration mean?

This plant is a week and a half old since seed. The leaves started yellowing in the middle with the darker normal green concetrated towards the stem. The tips of the secondary leaves are yellowing too.

This is happening to 3/4 of my plants so figured I'd ask. It looks less yellow in the picture than in real life.

They are in Sunshine Mix #1 being fed 6.0 water, switched to 6.5 today. No nutes have been added yet, just superthrive in the water. Temps are around 75-80 with CFLs. I have 6-4-4 Fox Farms Big Grow when I begin feeding nutes.

Are you sure it's not overwatering?
Or maybe holding to much water in the pot?
Or maybe to much superthrive?

Just use Ph adjusted RO or Distilled water for a few times the next time you water and see if that helps.

Only one of the plants was sligthly wilty so I'm not sure if it was over watering. I'll take your advise and see if that helps, thanks Zandor.

I would agree with Zandor on the maybe too much SuperThrive.

Some strains can handle even though ALL should be able to.

Also, I think your 6.0 water is too low. I would crank it up to 6.8 or even 7.0 for the next week. If your soil is basically acidic in nature, the 6.0 is too low and can cause this.

Also, if you are on a 24/0, I would consider 18/6 but I think its acidic environment is a bit over kill.

Keep us updated :)

I had just cranked it to 6.5 so I'll try closer to 7.

My light cycle has been 18/6 except for a few days of 24/0 when seedlings.

Thanks brohams.

Could use some help with this other plant I have...

The leaves are drooping and theres some weird color patterns forming on just the first set of true leaves. The seed leaves are also yellowing and theres dark coloring forming on the edges of the leaves towards the tip.

I watered with 7.0 water once since my last post here. The plant is over 2 weeks old since sprout, not nutes have been fed yet.

I think this may be as simple as you have the foil shiny side out.

I think shes getting flash burn.

Swap it around.

Also, you watered once since the 27th??????

Something isnt right here.

I have to water fricking everyday...EVERY DAY sometimes 2X.

Somethings tells me your circulation might not be strong enuff, humidity too high, etc...

What are the Atmospheric conditions?

Show your grow setup too if you dont mind.

Water pushes nutes up the plants. If its sitting in your dirt, something else is wrong.

No, I have the dull side out.

Yea I watered once on the 27th and then again on the 30th. I've been using a cheapo moisture meter on different depths and locations. I water when the top is "dry" and the bottom half is "moist". Is that about right? About to water again right now...

The temps stay in the 75-85 range, mostly 78. Humidity is at 45-55%. 18/6 photoperiod.

I have a 125W light in the middle with two 25W flourex CFLs on each side directly over the plants. No cam right now. I have the same fan as you blowing in the same manner, I can see all the plants dance. I had heat issues after I bought the 4 CFLs so I took the batwing off the main light, pos. Might make something similar to yours.

Out of the 4 plants, two do not have these symptoms. Thanks for the help, this is confusing me.

I just measured the ph or the murky runoff water... around 5.0.

Or who knows, the water was already a yellowy color so maybe that liquid ph test kit wasnt so accurate.

Beta is getting worse =/

The overall color is turning lima bean green.

Really man it just looks like a plant whose bottom leaves dont like being dipped into the dirt and getting water on them with the dirt.

The new stuff looks good.

Those bottom leaves are now toast so dont worry about them any longer. They are going to die, but just let them dry and fall as they may.

I would water more slowly and keep those leaves from dipping into the water.

I think it will be fine. Keep us posted eh?

Hmmm, weird. I guess it could be that... never thought about it.

Water might have splashed on them but they were never dipped in the water.

Here's another plant that seems to be suffering the same fate.

Wahhh.

When you water, it looks as though the water level is rising just enuff to hit those bottom leaves before the water is absorbed.

Looks like all of mine do on the bottom leaves.

Nothing to worry about, I am certain of this :)

It maters not as those bottom leaves are first to die anyhow. But this will happen every time pH down adjusted water hits those bottom leaves.

All is well.....as long as it doesnt show any higher up, thats what it is and you will be fine.

just give it pure h20 and flush out the medium

Seems to be spreading to more than just the bottom leaves and now more plants are affected. I'm just throwing this out, but could it be a root problem?

Pics: Three affected plants. Sole healthy looking plant.

what is that white yellois stuff under the plants in pic 1 and 2 hope that isnt mold kinda looks like it to me do you water in the mornin or at night?
that black dont look good on the tips of the leafs check out overgrow.com in the faqs for plant problems

hey guys could it be a Phosphorus dif. thats what mine did at the beginin i just fead mine and the propblem went away. just a thought ask some other peeps later

fivesmallones: The yellow stuff is perlite. I water in the morning or afternoon if I don't have time in the morn. I try not to water at night to prevent high humidity.

I've asked numerous times about when I should start feeding nutes but I get no replies. Who knows if it's a deficiency...

I'll post in OG and see if anyone adds somethiing in.

You don't start feeding nutrients to seedlings. You start feeding nutrients once you are in the vegetation cycle. That starts once you have your 4th set of true leaves formed as a guide. Then you can use HID lights too if you got them. Use only fluorescents lights before that so yo don't get the inside temperature to hot.

Cool. Well they are all starting to form their 5th set of leaves now.

Quote:

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Originally Posted by stickygreenlightsabr

Cool. Well they are all starting to form their 5th set of leaves now.

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Now you are in the vegetation cycle and you can feed them nutrients now.