should i be concerned? leaf pic

Ok I have 2 of my girls showing this on leaves other 4 look normal?!


Set up: 400 w hps suplemented with 4-24" wide spectrum flowering flourescents 40w 750 lumens each.
18/6
Soil is
1 part expert gardner perfect mix garden soil.
1 part MG organic mix potting
1 part perlite
1 part vermiculite

Water every third day or when top 1" or so of soil is dry. I have well water that I use on the plants so there is no worry about chemicals like chlorine.

Ph meter always right about 7- 7.5

You may have the early signs of the following going on there:

Mg - MAGNESIUM (Mg)

Lower leaves yellow and may even turn white while veins remain dark green. Blades die and curl upward.

Brick Top said:

You may have the early signs of the following going on there:

Mg - MAGNESIUM (Mg)

Lower leaves yellow and may even turn white while veins remain dark green. Blades die and curl upward.

Click to expand...

Thanks for the reply.
I read dozens of threads and looked at all the pics in the stickys up top that's what I was leaning towards.

Is it possible so see deficiencies in soil mixed just a few weeks ago. About 2 weeks from sprout maybe closer to 3

I just realized that the expert gardner is garden soil not potting soil.
So even at only 25% of mix could it just be too hot for new plants under6"

jensenblaze said:

Thanks for the reply.
I read dozens of threads and looked at all the pics in the stickys up top that's what I was leaning towards.

Is it possible so see deficiencies in soil mixed just a few weeks ago. About 2 weeks from sprout maybe closer to 3

I just realized that the expert gardner is garden soil not potting soil.
So even at only 25% of mix could it just be too hot for new plants under6"

Click to expand...

It is hard to say how or why. Maybe you just got a bad batch and maybe it is something else but that seems to be your problem so the next step is of course repairing it.

Since that is really what matters the most then the how or why of it all are not really all that important at the moment.

Absolutely right with that one!!!
I just didn't want to be over eager to fix something that isn't wrong.


Now I'll do some more research to begin resolving the issue.

Thanks again bricktop for you help!!

Since I'm not useing any nutes due to the continues feeding soil.

Correct me if I'm wrong! I read useing a epsom salt solution for watering will help with my magnesium deficiency( 1tsp per gallon of water)

jensenblaze said:

Since I'm not useing any nutes due to the continues feeding soil.

Click to expand...

In the future you should stay away from soils with slow release fertilizers in them. If they are not mixed in the proper proportions or if something different happens you will have problems. Doing all the feeding is the best way to go. That way you know what the plants are getting and when they are getting it.
　
If someone has to go the slow release fertilizer route I say still start with a good basic soil but then use something like the Fox Farms organic dry slow release fertilizer that you mix into your soil. You have less of a chance of getting a bad mix and more control over fixing a problem if one pops up.

Yeah on my next grow I'm going to go with a higher quality and fert free soil mixture definately keep my self in driver seat.


Also I think that watering and especially over watering can cause issues with self release soils. The ferts are in little water disolveable capsules spread through out the soil so a high level of moisture or an ocasional over watering or soil flush could cause a huge spike in ferts being released.

Ok now to make things wierder. One of the 2 plants is showing pistols and the other(the leaf pic) has a lil set of balls!! I killed him of course.

Confusion is their on a 16/8 light cycle and are literally only 14 days old from hatching out their little shells!!!! WTF????

That could also be zinc deficiency...