need a little advice on plant problem.?

plants are still yellow at the bottom, on just about every single one of my plants.. looks like the leaf's burnt to the inside on each one..
i'm worried about that but not all too much, b/c the top growth is coming in..

i do though have 1 plant that is browning in small speckles on sets of leaf's.. real weird, when i originally saw it about 5 days ago, thought it was some dirt that got on the leaf, and i tried to brush it off and felt how dry that leaf was and found out it wasnt coming off..
started off as just sprinkles of brown dirt looking spots, and is developing into a bigger burn..
i have foliar fed them 2 times ( monday and tuesday that just passed ), but i do it as soon as the lights go out, but i thought that may be the cause..
over last week i have flushed out each plant, very thouroughly, and have fed them ph'ed water, fox farms grow big, and h2o once each...
any idea's ?? ??? ????:confused:

on the good side though, they are getting big and bushy.. LST is awesome.

Your first picture is very telling. Do you see how the water is sort of pooling along the veins?

I suspect that your foliar solution is pooling and as it dries it gets concentrated enough to burn the leaves.

I would hold off on foliar feeding for a while.

When you resume, try feeding with the lights on, with a surfactant and weaker solution, so that the water evaporates before it has a chance to evaporate, and doesn't bead up.

The last picture shows a bit of nute burn on some of the lower leaves.

On the up side, those are very nice bushy plants!

It's either nutes that burned the leaves,from the foliar feeding,or it spider mites.Examine the underside of the leaves,with a magnifiying glass.You'll see them if it's mites! I hope not! They suck the life right out of a crop! You can control them! There are alot of good posts about mites.

Ga Grown

i thought it may be mites too, b/c there are a bunch of little things running around outside of my house, and this house is kinda old..
i realeased some lady bugs in there, just about 7, still got a bag full.. i did look under the leaf's and i didnt see anything, but not w/ a magnifying glass..
going to get one, and i'll check...

thanks!~

If it is spider mites, you will notice some very fine stippling of the leaves.

Release those ladybugs. They're great.

the ladybug wont eat the plants if there is no mites, right?

if i foliar feed w/ some epsom salts, and the issue ends up not being that it is a Mg defeciency, will it screw them even more?
this is why i think it may be Mg problem......
http://www.drugs-forum.com/growfaq/1029.htm

Quote:

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Originally Posted by sjacobs713

the ladybug wont eat the plants if there is no mites, right?

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Right. LAdybugs will eat all types of insect pests.
If they do take a few nibbles of the plant, no biggie.

Quote:

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Originally Posted by sjacobs713

if i foliar feed w/ some epsom salts, and the issue ends up not being that it is a Mg defeciency, will it screw them even more?
this is why i think it may be Mg problem......
http://www.drugs-forum.com/growfaq/1029.htm

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No, for real, you're foliar feeding too aggressively as it is.

That does not present as a Mg deficiency. The colors are reversed from what it would be: Green veins and rusty interveinal spaces.
You have brown veins and green between.