Problem girls need a proper diagnosis.

[TomTom420]

Just wondering if anyone can take the time to tell me what's wrong with these problem girls? Sunshine mix soil...couple light feedings of mega crop .25 strength...one half dose of Epsom salt a while back...cal magic recently...tent is 78 deg lights on...40-50 humidity...these girls are 12-14 weeks in veg...growing slow...thanks for your time.

 

[Comnconnection]

They look a little all over the place, it seems like an imbalance of things causing a lockout. Are you using tap water or R/O water? The plain water EC shouldn't be more then like .2EC. Before giving to plants, pH of water should be between 6.3-6.8 and EC probably around 1.2-1.4 after adding nutrients for a plant that size. Id honestly drop that mega crop and switch over to something like botanicare, canna terra, or bio bizz. I wouldn't mess with the epsom salts or cali magic either, just grab some botanicare cal-mag and add at 2ml/gal. Calcium nitrate/magnesium nitrate plus the iron is what you want. That said, without knowing more details, I would flush those plants well with 2ml cal-mag pH 6.5, then follow up with a 6.5 pH solution of nutrients at 1.3 EC with that 2ml cal-mag and your grow food. Only add your food with every other watering, so do plain water in between. Hope that helps.

 

[Imzzaudae]

Sunshine mix looks ok. A general peat moss and perlite based potting mix. You should have no problem running this 6.5ph.

Your problem arises from your choice of fertilizer. Mega Crop 9-7-14.
You will find that cannabis grows best in a fertilizer with a 3-1-2 percentage formulation.
These are all 3-1-2 formulations.
6-2-4
9-3-6
3-1-2
12-4-8
As Sunshine mix is buffered with Dolomite lime, it already contains both Calcium and Magnesium.
Have you kept track of your water ph. If so what ph is your water?
Is your water City water? Distilled Water? R.O water?

In this case, I believe that your fertilizer with it's very high potassium level, paired with a high water ph have caused
a Calcium lockout situation. All you can do is restore the soil ph to 6.5,
Apply a fertilizer suitable for your plant's life cycle requirements and give the plant time to recover.

In order to make knowledgeable decisions when selecting and applying fertilizer you need to study up on what the 3 NPK numbers
on the bag or box mean.
These lessons are for liquid based fertilizers. But at the end you will be able to do these calculations for dry fertilizers should you chose to do so.
Grab a note pad. A pen and a calculator. Just start running numbers. It will take a little time but if you put in a little effort it will come to you.
Once you can create fertilizer solutions of any N ppm you like. Your nice shinny new E.C meter will come in handy.



Hope this helps you.

 

[JJamsS1]

First guess is the PH of your feedings is out of whack causing a myriad of lockout issues over-and-above the obvious N deficiency,

 

[TomTom420]

Sunshine mix looks ok. A general peat moss and perlite based potting mix. You should have no problem running this 6.5ph.

Your problem arises from your choice of fertilizer. Mega Crop 9-7-14.
You will find that cannabis grows best in a fertilizer with a 3-1-2 percentage formulation.
These are all 3-1-2 formulations.
6-2-4
9-3-6
3-1-2
12-4-8
As Sunshine mix is buffered with Dolomite lime, it already contains both Calcium and Magnesium.
Have you kept track of your water ph. If so what ph is your water?
Is your water City water? Distilled Water? R.O water?

In this case, I believe that your fertilizer with it's very high potassium level, paired with a high water ph have caused
a Calcium lockout situation. All you can do is restore the soil ph to 6.5,
Apply a fertilizer suitable for your plant's life cycle requirements and give the plant time to recover.

In order to make knowledgeable decisions when selecting and applying fertilizer you need to study up on what the 3 NPK numbers
on the bag or box mean.
These lessons are for liquid based fertilizers. But at the end you will be able to do these calculations for dry fertilizers should you chose to do so.
Grab a note pad. A pen and a calculator. Just start running numbers. It will take a little time but if you put in a little effort it will come to you.
Once you can create fertilizer solutions of any N ppm you like. Your nice shinny new E.C meter will come in handy.



Hope this helps you.

Thanks for your reply...I'm using city water that always sits for a few days...I don't ph.

 

[Imzzaudae]

City water is good. It still has all the minerals R.O and Distilling remove.
You need to get yourself a PH pen and an E.C pen.
There is nothing you can add or a quick fix for this plant. You need to be able to ph the water very carefully and slowly bring her back.