Diagnoses needed. help me learn

Zack1996spade

Zack1996spade

Member
Plant is 4 weeks old
24hr light schedual
300W fullspec led
Nute npk 12 6 12
Ph 6.3-6.5 after adding nutes
Feeding every other water
Water every 4 days
Last watering added magnesium sulfate
Regular topsoil sterolized with steam
Mixed 30%perlite
Does that help any?
 
Dr. Who

Dr. Who

Well-Known Member
Show me a picture of the whole plant under normal light and then the effected area's.
Single leave's, off the plant......Don't tell me the picture I need to make a call.

What brand of nute and how much of that 12-6-12 at a time - mix ratio?

Looks like Mg def. and Ca def starting now too.

That soil is dead. Nothing working it..... Add some AACT tea and put the living bio's back in it!

Heating it changed some compounds in the soil too.....Use a fresh bagged soil from now on, or learn how to build your own.

Pick up a Ca/Mg and use that. Calcium carbonate based.
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Dr. Who said:
Show me a picture of the whole plant under normal light and then the effected area's.
Single leave's, off the plant......Don't tell me the picture I need to make a call.

What brand of nute and how much of that 12-6-12 at a time - mix ratio?

Looks like Mg def. and Ca def starting now too.

That soil is dead. Nothing working it..... Add some AACT tea and put the living bio's back in it!

Heating it changed some compounds in the soil too.....Use a fresh bagged soil from now on, or learn how to build your own.

Pick up a Ca/Mg and use that. Calcium carbonate based.
Click to expand...
Slightly off topic. But would you recommend calcium oxide?
 
Jimdamick

Jimdamick

Well-Known Member
Zack1996spade said:
Plant is 4 weeks old
24hr light schedual
300W fullspec led
Nute npk 12 6 12
Ph 6.3-6.5 after adding nutes
Feeding every other water
Water every 4 days
Last watering added magnesium sulfate
Regular topsoil sterolized with steam
Mixed 30%perlite
Does that help any?
Click to expand...
Drop your light schedule to 18/6 (plants need a rest period)
PH 6.0
Should be good to go.
Your plant's leaves will deteriorate over time, no way all will look perfect all the time
You will be fine.
Merry Xmas brother
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Dr. Who said:
NO! High school chemistry 101...Calcium oxide reacts with water in a violent reaction! It creates calcium hydroxide. Both are very caustic! Both will kill your plants!
Click to expand...
Well my calmag is composed of calcium oxide and magnesium oxide.. what’s going on here then?

It’s Vitalink brand..
 
Dr. Who

Dr. Who

Well-Known Member
Nutty sKunK said:
Well my calmag is composed of calcium oxide and magnesium oxide.. what’s going on here then?

It’s Vitalink brand..
Click to expand...
?????????

It's part of the CALCIUM CARBONATE chain. Sometimes in our differing countries. Things are listed as not exactly as what they are...... Limestone based calcium's have natural Calcium Oxide content. They also contain Mag...
In EU countries, it's common to list Ca as CaO and Mg as MgO. They are not exactly what you think they are...

I supply these to help you understand.

This is from the greenhouse growers site.....

Limestone Nutrient Content

There are four types of carbonate-based limestone that are available. Calcite is pure calcium carbonate (CaCO3, 40 percent Ca). Calcitic lime is composed of mostly CaCO3 (> 30 percent Ca) with some MgCO3 (<5 percent Mg). Dolomitic lime contains less CaCO3 (<30 percent Ca) and more MgCO3 (>5 percent) than calcitic lime. Finally, dolomite also contains CaCO3 and MgCO3, but at a specific ratio of 22 percent Ca to 13 percent Mg.

Calcium hydroxide (Ca(OH)2), also known as hydrated lime, or calcium magnesium hydroxide (CaMg(OH)4), also known as dolomitic hydrated lime, are sometimes used as a fast reacting liming source because they will react quickly and leave no residual. Calcium hydroxide contains approximately 54 percent Ca, while calcium magnesium hydroxide contains about 30 percent Ca and 18 percent Mg.

Sometimes the calcium and magnesium content of the limestone is listed as CaO or MgO on the label. To convert CaO to actual Ca, multiply the CaO value by 0.71. To convert MgO to actual Mg, multiply the MgO value by 0.6.


The below is from

https://www.britannica.com/science/calcium#ref89814

Calcium oxide, CaO, also known as lime or more specifically quicklime, is a white or grayish white solid produced in large quantities by roasting calcium carbonate so as to drive off carbon dioxide. At room temperature, CaO will spontaneously absorb carbon dioxide from the atmosphere, reversing the reaction. It will also absorb water, converting itself into calcium hydroxide and releasing heat in the process. The bubbling that accompanies the reaction is the source of its name as “quick,” or living, lime. The reaction of quicklime with water is sometimes used in portable heat sources. One of the oldest known products of a chemical reaction, quicklime is used extensively as a building material. It is sometimes used directly as a fertilizer, although calcium carbonate is usually preferred for that purpose. Large quantities of quicklime are used in various industrial neutralization reactions. Limelights, used in the 19th century in stage lighting, emit a very brilliant white light upon heating a block of calcium oxide to incandescence in an oxyhydrogen flame, hence the expression “to be in the limelight.”

A large amount of calcium oxide also is used as starting material in the production of calcium carbide, CaC2, also known simply as carbide, or calcium acetylide. Colourless when pure (though technical grades are typically grayish brown), this solid decomposes in water, forming flammable acetylene gas and calcium hydroxide, Ca(OH)2. The decomposition reaction is used for the production of acetylene, which serves as an important fuel for welding torches. The drip of water on calcium carbide produces a steady stream of acetylene that is ignited in carbide lamps. Such lamps were commonly used in lighthouse beacons and by miners in the early 20th century and still find some use in spelunking. Calcium carbide also is used to make calcium cyanamide, CaCN2, a fertilizercomponent and starting material for certain plastic resins.


The average Joe grower, couldn't even keep CaO around the house in pure, powdered form. It would end up Ca Hydroxide - CaOH2
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Dr. Who said:
?????????

It's part of the CALCIUM CARBONATE chain. Sometimes in our differing countries. Things are listed as not exactly as what they are...... Limestone based calcium's have natural Calcium Oxide content. They also contain Mag...
In EU countries, it's common to list Ca as CaO and Mg as MgO. They are not exactly what you think they are...

I supply these to help you understand.

This is from the greenhouse growers site.....

Limestone Nutrient Content

There are four types of carbonate-based limestone that are available. Calcite is pure calcium carbonate (CaCO3, 40 percent Ca). Calcitic lime is composed of mostly CaCO3 (> 30 percent Ca) with some MgCO3 (<5 percent Mg). Dolomitic lime contains less CaCO3 (<30 percent Ca) and more MgCO3 (>5 percent) than calcitic lime. Finally, dolomite also contains CaCO3 and MgCO3, but at a specific ratio of 22 percent Ca to 13 percent Mg.

Calcium hydroxide (Ca(OH)2), also known as hydrated lime, or calcium magnesium hydroxide (CaMg(OH)4), also known as dolomitic hydrated lime, are sometimes used as a fast reacting liming source because they will react quickly and leave no residual. Calcium hydroxide contains approximately 54 percent Ca, while calcium magnesium hydroxide contains about 30 percent Ca and 18 percent Mg.

Sometimes the calcium and magnesium content of the limestone is listed as CaO or MgO on the label. To convert CaO to actual Ca, multiply the CaO value by 0.71. To convert MgO to actual Mg, multiply the MgO value by 0.6.


The below is from

https://www.britannica.com/science/calcium#ref89814

Calcium oxide, CaO, also known as lime or more specifically quicklime, is a white or grayish white solid produced in large quantities by roasting calcium carbonate so as to drive off carbon dioxide. At room temperature, CaO will spontaneously absorb carbon dioxide from the atmosphere, reversing the reaction. It will also absorb water, converting itself into calcium hydroxide and releasing heat in the process. The bubbling that accompanies the reaction is the source of its name as “quick,” or living, lime. The reaction of quicklime with water is sometimes used in portable heat sources. One of the oldest known products of a chemical reaction, quicklime is used extensively as a building material. It is sometimes used directly as a fertilizer, although calcium carbonate is usually preferred for that purpose. Large quantities of quicklime are used in various industrial neutralization reactions. Limelights, used in the 19th century in stage lighting, emit a very brilliant white light upon heating a block of calcium oxide to incandescence in an oxyhydrogen flame, hence the expression “to be in the limelight.”

A large amount of calcium oxide also is used as starting material in the production of calcium carbide, CaC2, also known simply as carbide, or calcium acetylide. Colourless when pure (though technical grades are typically grayish brown), this solid decomposes in water, forming flammable acetylene gas and calcium hydroxide, Ca(OH)2. The decomposition reaction is used for the production of acetylene, which serves as an important fuel for welding torches. The drip of water on calcium carbide produces a steady stream of acetylene that is ignited in carbide lamps. Such lamps were commonly used in lighthouse beacons and by miners in the early 20th century and still find some use in spelunking. Calcium carbide also is used to make calcium cyanamide, CaCN2, a fertilizercomponent and starting material for certain plastic resins.


The average Joe grower, couldn't even keep CaO around the house in pure, powdered form. It would end up Ca Hydroxide - CaOH2
Click to expand...
Thanks for clearing that up mate! Merry Christmas :)
 
You must log in or register to reply here.
Top