You aren't toxic, not even close. I'm in senescence in the above images and my plants are darker green than yours and mine aren't close to toxicity.
Are you running clones from your last grow?
Mag/calcium deficiency?
- Thread starter SamWE19
- Start date
Are you running clones from your last grow?
Yeah I run clones. I have no problem adding ca btw. I’m doing just that I’ve ordered gypsum today. And I added calmag via stackswell when you first advised it. But I guess that stackswell is very high in nitrogen.
I appreciate all the advice as with horticulture I’ve been growing fine for years with no need for calmag. But we’re always learning. I think my water ppm has changed from the city recently too as 0.1 seems very low and I don’t remember it being this low.
I like to understand why recommendations are made so I can understand the science behind it rather than taking advice finding it works but not knowing how. Hope you understand
I meant the same clones you ran the last table are they the same exact clones you ran the last table or are they clones of a different strain. However your water source's reduction in TDS, which is often mostly Ca and Mg, would explain your need to supplement those separately from your major nutrients.
Yeah exact same clone from same mother plant
I run many different strains on the same table all the time, constantly. I am always on a balance between overfeeding some and underfeeding others. Since I rarely run a strain twice, and when I do I run it with others, I figure if I take the lighter feeds to burnt tips the nutrient hogs will survive with only minor deficits. I live my life on a see saw.
Essentially in hydro I dialed in a strain by taking it to burnt tips and backing down 10% on nutrients. But since I don't run production tables that's not what I do.
It's your decrease in tap water TDS.
I wouldn't I'd leave it right where you are add the Ca in and go from there.
Alright cheers will see how things are by end of next week
TintEastwood
Well-Known Member
For me, in coco. All it takes is a big swing in feed ec to cause a single tip burn incident.
Normally feeding at say 1.4 ec.....
Then one time I feed it at 1.8 ec....
Boom. Tip burn.
Burn is there to stay. How I feed going forward is key.
One should ask...
Why did I feed at 1.8?
Maybe I made a mistake.
Maybe I was making a change to my nutrient mix.
Maybe I was trying to determine exactly how high of a ec a particular strain could handle....before.tip burn.
Now, when I make changes to ec, I try to keep consistent within 100-150ppm.
Normally feeding at say 1.4 ec.....
Then one time I feed it at 1.8 ec....
Boom. Tip burn.
Burn is there to stay. How I feed going forward is key.
One should ask...
Why did I feed at 1.8?
Maybe I made a mistake.
Maybe I was making a change to my nutrient mix.
Maybe I was trying to determine exactly how high of a ec a particular strain could handle....before.tip burn.
Now, when I make changes to ec, I try to keep consistent within 100-150ppm.
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In my case my ppm was never above 330ppm including tap water. 0.66 EC
its strange I can only assume it’s to do with ratios. My plants may be able to handle more Ppm’s when I start giving ample calmag
Dr. Who
Well-Known Member
Oh goody, goody! Sulfur, my favorite plant topic.....
Sulfur is sooooo important to any plant's growth that it is yearly debated to make S the 4th Macro nutrient! It would be NPKS in our debated idea.
Supplementing compounds in the sulfate form will directly effect certain terp profiles. Certain sulfate compounds effect specific terpene production.
Mg sulfate - MgSo4
Potassium sulfate - KSo4
Will effect berry and citrus terps..
I've been working with a cpl other sulfate compounds, attempting to find which are effecting the others.
Looking for what effects pinene and the others..
It appears each has some cross effects to others but the 2 listed have great effect on the 2 terps listed
When supplementing for terp increase's. One must practice control in how much by volume, at what concentration, and for how long you apply it.
The reason being, is that Mg and K will reduce THC production if over used. There is a tipping point that will bring that issue on.. It does multiply on a bell curve too.
THC production is like a complete bell curve in it's self. It starts out slowly in veg and as the plant is beginning to bloom. It rises to a peak and drops back of about the same speed as it rises... At least this is how it's shown in testing out of Israel (The leading country for cannabis research).
Questions?
I wish you would write a book!
very interesting. I always thought calcium was the most likely to be named the 4th macro element.
You mention mag sulfate and pot sulfate effecting specific terps. Which terps would calcium sulfate effect?
cheers
Dr. Who
Well-Known Member
Sulfur allows the use of most of your other elements/compounds to be utilized in all plant process's. Without it, nothing would work! Hence the argument for it to be the 4th macro.....The plant will utilize sulfate compounds easily.....Yet the form of the sulfate can also interact negatively with other compounds....
Have not used it to find out yet. Ca sulfate is trumped by what other forms of Ca can do for you.
I prefer Ca carbonate...I like to be carful on how much Ca I have available. It can interact badly with too many other things..
You can use a sulfate micro mix like TM-7 for micro's. Cu sulfate, Zn sulfate - etc.
Dr. Who
Well-Known Member
Your not the only one who say's that...
By far about everyone I have given hands on training says the same thing.....
Considering it actually....
Let me ask you good folks a few questions covering this area.
How deep into lighting would you actually read?
How would you like nutrient's explained and handled?
Setting up?
Tell me what you would like to see in the book?
Now I'm just kinda beginning to explore this as a real possibility. Not that I will but, maybe with some good input...
I might begin to work on chapters...
Someone said calcium carbonate was not soluble and advised calcium sulphate as a calcium source. You have a different view?
myke
Well-Known Member
Offer a website or something that people can get hands on training via email.Offer all the side nutes you need so I can just get them from you.Books well they sit on a shelf,I have a few but its just easier to come to places like this.
This shouldn't be one book. This shouldn't cover the basics. You could do an easy three books, lighting, vegetative growth and flower, all advanced topics.