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[gtb]

Maybe I should just cut my losses with this run?

 

[MiGrampa]

Maybe I should just cut my losses with this run?

No, they will still flower and give you a decent yield. Your grow is not a loss. It's more like a puzzle that you haven't completely figured out.

For now, I would defoliate to get some better airflow. I'd concentrate on damaged leaves under the net. Unless @Aqua Man says differently, flip to 12/12. Continue feeding magnesium. I would be inclined to go back to 1 teaspoon a gallon included with your regular feed schedule.

Tell me about your soil mix ... what brand is it? Or is it a hardware store potting mix? Something is off and we haven't completely figured it out yet. When I was struggling with this situation, I switched to using distilled water so I knew my ppm baseline was essentially zero. I bought a tabletop water distillation machine and my plants nutrient mix starts with distilled water. That's pretty extreme but its a valid option.

What is your watering schedule/How do you determine when to water your plants? Many people use the heavy pot/light pot method. It may work for some, but I believe it causes more trouble than it solves for many growers. We seem to have this compulsion about over-feeding, watering too frequently, and/or using too much lighting. Many are doing all of it at the same time with their grows. For me, even after all these years, I trust my moisture meter over any other method. I don't water until the meter tells me I should. I also frequently end up watering different plants on different days because that's what the meter says.

Go ahead and finish this run out. You'll be happy that you did. Then lets get back to the basics and then go through the list. Soil drainage - add perlite or similar if needed. Soil pH - your soil should be between 6.0 and 7.0 pH. The sweet spot is 6.5. Lighting - over-lighting happens in almost every grow I see online. Over-lighting will also mimic deficiencies sometimes. That's why we ask where on the plant are you seeing the leaf problems you're trying to fix.

Edit: You cut your losses and cull your plants when you see hermies or fungal disease such as WPM or bud rot. Most other things don't require such drastic actions.

 

[gtb]

My soil mix is a brought mix for cannabis cultivation i use ( canna terra professional) soil mix its a light mix ive also putt added perlite into this

 

[gtb]

My soil mix is a brought mix for cannabis cultivation i use ( canna terra professional) soil mix its a light mix ive also putt added perlite into this

I had always done the lift pot method but I need to just order a moisture meter

 

[MiGrampa]

My soil mix is a brought mix for cannabis cultivation i use ( canna terra professional) soil mix its a light mix ive also putt added perlite into this

I had always done the lift pot method but I need to just order a moisture meter

At least the meter that I'm suggesting is pretty cheap. It's easy to run up a small fortune in hobby expenses.

 

[gtb]

Plenty of drainage in each plant they get a gallon each from this i can achieve the 20% run off (800)ml

 

[MiGrampa]

Plenty of drainage in each plant they get a gallon each from this i can achieve the 20% run off (800)ml

Have you pH'd the run-off? It's data ... It might mean nothing, but could mean something. It's worth a look.

How often have you been watering your plants? The one gallon per plant is what I give mine in 3 gallon bags.

 

[gtb]

My drain off is all good i put in 6.2-6.3 from this im getting the 6.1-6.2

 

[gtb]

I have all data noted

 

[gtb]

I'm im 3gallon bags too

 

[gtb]

Watering/feeding are done almost every 3 days

 

[steamroller]

I would increase the Nitrate and see if that helped stop the yellowing also.
Maybe just me?

 

[gtb]

U said about using a teaspoon again this is like 20+grams is that ok

 

[MiGrampa]

U said about using a teaspoon again this is like 20+grams is that ok

I was thinking a teaspoon is about 5 grams. Let me verify.

Edit: Here it is ...

how many grams in a teaspoon of epsom salts

Edit:
There are approximately 5 grams in a teaspoon of Epsom salts.
This is a general approximation since the exact weight can vary slightly depending on how tightly packed the teaspoon is and the specific brand of Epsom salts. But for most practical purposes when measuring Epsom salts for bath soaks or other uses, 5 grams per teaspoon is a reliable conversion to use.

 

[steamroller]

 

[gtb]

My bad sorry

 

[MiGrampa]

My bad sorry

You did say "almost every 3 days." Does that mean less than 3 days between watering? If so, I'm interested in what a moisture meter reading would be. 3 to 4 days is what I would expect under most environmental conditions.

 

[steamroller]

My bad sorry

Keep us on our toes.
Old guys you know~!

 

[gtb]

So I've gone from no mag to a mag rich feed of a heaped teaspoon 9gramms per gallon then was told use 1gram per gallon to now up again to 5grams will this be ok

 

[steamroller]

Yea MG is very hard to overdose.
Calcium on the other hand is trouble if over used.
That is why so many use Epsom by itself instead of a Ca/ MG pre mix.
You really should not have any trouble.

 

[steamroller]

Here you can see what has effects on what and if the effect is good or bad.

 

[MiGrampa]

So I've gone from no mag to a mag rich feed of a heaped teaspoon 9gramms per gallon then was told use 1gram per gallon to now up again to 5grams will this be ok

Yea MG is very hard to overdose.
Calcium on the other hand is trouble if over used.
That is why so many use Epsom by itself instead of a Ca/ MG pre mix.
You really should not have any trouble.

This issue might be directly related to how much calcium is in your tap water. @Aqua Man said its hard water. Heavy on the calcium. Calcium tends to build up in your soil over time. Then it blocks the uptake of most other nutrients.

 

[gtb]

You did say "almost every 3 days." Does that mean less than 3 days between watering? If so, I'm interested in what a moisture meter reading would be. 3 to 4 days is what I would expect under most environmental conditions.

I'm watering every 3 days between watering when bags are dry and light

 

[MiGrampa]

I'm watering every 3 days between watering when bags are dry and light

That's about where you should be. If you're early, its not by much. I am starting my 3rd week of flowering and my plants are taking a gallon of water each every 3 days.

I'm convinced you're dealing with calcium lockout.

 

[gtb]

Calcium lockout soo meaning just carry on with the Epsom salts or does this mean its wanting cal now? Got a lil confused with what a cal lockout would mean to be able to sort this

 

[Observer]

Calcium lockout soo meaning just carry on with the Epsom salts or does this mean its wanting cal now? Got a lil confused with what a cal lockout would mean to be able to sort this

Too much calcium locking out other nutrients

If that's the issue, filtering you're water.

 

[steamroller]

Cal lockout is too much calcium.
That silly chart shows that too much Ca will block almost everything else.

 

[MiGrampa]

Too much calcium locking out other nutrients

If that's the issue, filtering you're water.

That's what I see as his best option. He needs something that can drop his ppm to around 100. This screws onto a garden hose and will reduce both chlorine and ppm. It doesn't require a permanent installation and they are inexpensive.

 

[gtb]

I'll look into getting one of these cheers all!!!

 

[MiGrampa]

This is not a permanent solution because it would end up being costly over time .... You can buy distilled water for a week or so. Here's what's going to happen a few weeks after your plants are put into flower. Calcium needs will go through the roof. Things should begin to balance out.

I would continue with the epsom salts mixed in with your feed and then do what you can to keep from adding more calcium to the soil (filtered or distilled water).