What's wrong with my plants?

[ReprobateMind]

I just checked the pH of my tap water that has been bubbling for 48 hours. The pH is around 7.2 - 7.3ish based on the color that came out after using the liquid GH pH test kit. Should I lower the pH before flushing or just leave it alone?

 

[ReprobateMind]

Deleted - accidental double post

 

[linde]

Flush it and test the runoff. Im guessing the runoff will be much lower

 

[linde]

I find 95% of the time lockouts are caused from low pH. I've never personally had lockouts from high pH. Always low. Soil pH has a tendency to lower with use of fertilizers. So that tap water should be perfect.

 

[linde]

You've got unused fertilizer built up in your soil lowering the pH and causing a toxic mess. Give them a good flush and go from there

 

[ReprobateMind]

You've got unused fertilizer built up in your soil lowering the pH and causing a toxic mess. Give them a good flush and go from there

Thanks. I will flush in a few days when the plants are drooping from lack of water and report back with the pH of the run off.

I used LC's soil mix as described in the OP and found here https://www.icmag.com/threads/organics-for-beginners.48694/ I initially watered it with a small amount of BioAg Ful-Humix. The soil was kept moist and I stirred it a couple times a week for two weeks before using the soil. Isn't that enough cook time for 'unused fertilizer' not to cause issues?

 

[Normannen]

I just checked the pH of my tap water that has been bubbling for 48 hours. The pH is around 7.2 - 7.3ish based on the color that came out after using the liquid GH pH test kit. Should I lower the pH before flushing or just leave it alone?

a pH higher than 7 is too high, you're locking out a whole bunch of nutes, but most of all iron.
considering the use of powdered dolomite your soil is NOT buffering towards 6,5 pH which would be optimal.

 

[ReprobateMind]

a pH higher than 7 is too high, you're locking out a whole bunch of nutes, but most of all iron.
considering the use of powdered dolomite your soil is NOT buffering towards 6,5 pH which would be optimal.

What should I pH my water to, 6.5?

 

[LiquidKarma]

your clones that you purchased were close to spider mites, so they trip out when they shock from heat, and dry in the coco or soil or hydro root system from uneven nutes

you have to replace nutes when your plant ate and make sure you water better, don‘t flip flop on electron split water or tease your plants.

okay good luck

 

[Normannen]

What should I pH my water to, 6.5?

considering the powdered dolomite will bump it back up by buffering I would even dare bring it down to pH6

 

[TanzanianMagic]

Day 32 of Flower
Strain: Loompa's Headband x Triangle Kush from HumboldtCSI
Light: HLG 350r Diablo set at 60% - The light is 24" above the canopy.
Tent: 3'x3' Gorilla Grow Tent
Fan: Hydrofarm JetFan 6" 350 CFM set at 50%
Carbon Filter: Vortex Pro-Lite CFM
Two oscillating fans in the tent - one right below the light and one on the floor

Soil:
LC's Soiless Mix #2
6 Parts Fox Farm Ocean Forest
2 Parts Earth Worm Castings
2 Parts Perlite
Amendments:
LC's Recipe #1
1 tablespoon Blood meal per gallon (12-0-0)
2 tablespoons Bone meal per gallon (6-8-0)
1-tablespoon kelp meal per gallon (1-0.1-2)
1 tablespoon per gallon Jersey Greensand
I let this cook for 2 weeks before I transplanted the adult plants into it.
Plants are in 3 gallon pots.

I water with tap water that has been bubbled for 24 to 48 hours. However, I do not test it for pH.

I may be watering too often. What do you think is wrong with them?

Here are the pics...

A few points:

1. I'm missing a magnesium and a sulphur source from the list.

Magnesium lime, or even espom salt. Lime doesn't flush out as quickly. Gypsum is also good for sulfur.

2. It would be helpful to see a side picture of the entire plant.

That gives a lot of information, like progression of the deficiency up the plant.

3. How long did the recipe rest?

A month is a minimum requirement.

4. You should use a fermentation to feed the plants.

If you grow hempseeds into microgreens and put them in a bottle upt 1/5 of the volume, and top off with tapwater with raw sugar dissolved in it. Put a fermentation lock on it, use some H2O2 added to the water in the fermentation lock, and put away in a dark warm place for at least a week.

This will have lots of hemp/cannabis specific mycorrhizal fungi, fermented sugars, and will make all those organic nutrients available.

 

[ReprobateMind]

your clones that you purchased were close to spider mites, so they trip out when they shock from heat, and dry in the coco or soil or hydro root system from uneven nutes

you have to replace nutes when your plant ate and make sure you water better, don‘t flip flop on electron split water or tease your plants.

okay good luck

No clones here. I grew from seed. LC's Mix #2 with LC's Amendment Mix #1 is designed to feed from start to harvest. I don't add any nutes. Just plain water.

 

[ReprobateMind]

A few points:

1. I'm missing a magnesium and a sulphur source from the list.

Magnesium lime, or even espom salt. Lime doesn't flush out as quickly. Gypsum is also good for sulfur.

2. It would be helpful to see a side picture of the entire plant.

That gives a lot of information, like progression of the deficiency up the plant.

3. How long did the recipe rest?

A month is a minimum requirement.

4. You should use a fermentation to feed the plants.

If you grow hempseeds into microgreens and put them in a bottle upt 1/5 of the volume, and top off with tapwater with raw sugar dissolved in it. Put a fermentation lock on it, use some H2O2 added to the water in the fermentation lock, and put away in a dark warm place for at least a week.

This will have lots of hemp/cannabis specific mycorrhizal fungi, fermented sugars, and will make all those organic nutrients available.

I just followed LC's Soiless Mix #2 with LC's Amendment Mix #1. It contains dolomite lime at at 2 tablespoon per gallon of soil. I don't know about soil science. It was my understanding that all one has to do is mix up a batch of this soil, let cook cook for 2 weeks, and transplant into it. That's what the instructions say to do and that's what I did. You can find it here, https://www.icmag.com/threads/organics-for-beginners.48694/ I also watered with soluble MycoGrow mychorrizae at transplant. https://fungi.com/products/mycogrow_for_vegetables.

To answer your questions,
1. There is 2 tablepoons of dolomite lime per gallon of soil. Is there sulphur in dolomite lime?
2. Lights are off right now so I can't take a pic of the side of the plant.
3. The recipe for the soil said to cook for 2 weeks. I cooked for 2 weeks.
4. I have feral hemp seeds. How tall should I let them grow? How much Sugar In The Raw should I use in a 1 quart jar? Is a 1 quart jar of this solution enough to feed 3 plants in 3 gallon containers? I have soluble mychorrize powder. Can I use that with the hemp microgreens?

 

[ReprobateMind]

considering the powdered dolomite will bump it back up by buffering I would even dare bring it down to pH6

So just leave the pH at what comes out of the tap, 7.2?

 

[Normannen]

So just leave the pH at what comes out of the tap, 7.2?

no, acidify from tap. or add more fermentables to your soil that can neautralise the EDIT: limestone (dolomite)
also you can just add coffe grounds to your soil, or downright add vinegar (in very moderate amounts!).

 

[oldfogey8]

I agree with the pH folks on this thread. I have never grown in soilless but my understanding is the pH should be the same as growing hydro so around 5.8. Also agree with the flush, flush, flush comment. Since the plants are not taking up the nutrients, some are still in the medium and will likely burn the plants when they resume taking up the nutes. Tap water pH can vary so what it was a month ago doesn’t mean it is ok now. If someone at the water treatment facility left a valve open too long or not long enough, the pH can be off. My brother was growing organic with no problems for months then it went to crap. Turned out his tap which had been around 7 was at 8.2.

 

[TanzanianMagic]

I just followed LC's Soiless Mix #2 with LC's Amendment Mix #1. It contains dolomite lime at at 2 tablespoon per gallon of soil. I don't know about soil science. It was my understanding that all one has to do is mix up a batch of this soil, let cook cook for 2 weeks, and transplant into it. That's what the instructions say to do and that's what I did. You can find it here, https://www.icmag.com/threads/organics-for-beginners.48694/ I also watered with soluble MycoGrow mychorrizae at transplant. https://fungi.com/products/mycogrow_for_vegetables.

To answer your questions,
1. There is 2 tablepoons of dolomite lime per gallon of soil. Is there sulphur in dolomite lime?

No, however you could add some gypsum the next time around. There is sulphur in epsom salt.

2. Lights are off right now so I can't take a pic of the side of the plant.
3. The recipe for the soil said to cook for 2 weeks. I cooked for 2 weeks.

4 is much better without using fermentations, and the longer the better.

4. I have feral hemp seeds. How tall should I let them grow?

About 3 inches is long enough.

How much Sugar In The Raw should I use in a 1 quart jar?

Just pre-mix the sugar with the water and only use what is dissolved.

Is a 1 quart jar of this solution enough to feed 3 plants in 3 gallon containers?

Sure. You only feed one bottle cap per quart. Although it also feeds the plant, it mainly feeds and energizes the bacteria around the plant. Just spraying it on the plant will feed it for a few days.

I have soluble mychorrize powder. Can I use that with the hemp microgreens?

Sure. However there are already micorrhyzal fungi on the hempseeds and they're free. And are specific to cannabis/hemp.

By the way the pH for a setup like this is around 7.0. It is about making the microbes comfortable, and at 7.0, you're in the middle of the 6.0 to 8.0 range. 7.2 pH from the tap is fine. No pH-down required.

 

[linde]

Every grower should have a good soil pH tester. U need to flush and test runoff. By the looks of your plant the pH is too low so the high pH tap water will what u want.

 

[ReprobateMind]

2. It would be helpful to see a side picture of the entire plant.

That gives a lot of information, like progression of the deficiency up the plant.

Here are side pics of the three plants in the tent.
The first two pics shows one of the leaves turning yellower in only a couple days from when I first posted pics. NOTE: The fan in the pics has been turned off for several days after someone here on ICMag told me to turn it off.

 

[ReprobateMind]

Some more side pics...