Yellowing and curling leaves on 2 week old

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Bane Theill

New Member
Hello growers. I am new in growing, this is my first try. On my first plant, at the beginning everything seemed fine but after true leaves start to get bigger and new leaves pop out, they all start to get yellower, also on the second set of leaves brown spots are seen. This one is 2 weeks old. Other, smaller plants are 1 week old and they start to show same issues. Moreover their leaves are strangely amorphed. Growing medium is soil peat perlite mixture. I switched to 16/8 light schedule 3 days ago (before the light was on for 24 h). The light is 400 W MH (dont have cfls or flourescent tubes). I don't know the strain, they are bagseed. The temp is 30 degrees celcius on day at most(25 avg) and 20 degrees celcius at least on night. RH is between 50 and 70 percent (flactuating between day and night). Please help me address the problem. Do i need to feed them already? I was using plain water. I have Biobizz Root Juice and Canna Terra Vega. Do i need to transplant them into bigger pots? Thanks.
First plant
P_20160115_025136_LL.jpg P_20160115_025149_LL.jpg
Second plant
P_20160115_025322_LL.jpg
Third plant
P_20160115_025440_LL.jpg
 

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Crab Pot

Crab Pot

Well-Known Member
They're too small to transplant this point. You should see plenty of roots prior to transplanting. I notice that you're using clear plastic cups, roots don't like light. Either wrap some dark tape around the outside of the cups or put the clear cup into a colored cup to hide the roots from the light.

Your plants are yellowing due to lack of nutes. Start feeding veg nutes at a low dose. Seedlings can't take full strength nutes. I would probably start at 1/8 to 1/4 strength.

Plant #2 looks the best. The others have drooping leaves from over watering. Be very careful not to over water the seedlings. If the soil is "wet" the seedlings will struggle. Use very little water when watering and make sure you have plenty of drainage holes in the side/ bottom of your cups.
 
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Bane Theill

New Member
Hi Crab Pot. Thanks a lot for the advices. I wrapped the cups with paper tape and painted the outside with black acrylic paint but the bottom is still clear. I will use ceramic trays under (now i am using glass plates) in order for them to keep away from light.

I will feed them with nutes and try not to overwater. Hope I will save them. Thanks again.
 
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Bane Theill

New Member
Hello Alienwidow. Thanks, i'll try not to overwater next time. To be honest, i thought i was not overwatering since i waited until top layer is dry and medium started to seperate from the cup, but for once i let them sit in the overrun water for half of a day, i think that caused them to be overwatered.

I unfortunately don't know if the medium includes any soil in it, mine is just a guess. Since it is almost impossible for me to purchase a well known brand in my country, i bought a local mixture. It is sold under the name of peat but on the package it says it includes N P K that helps the plants to grow healthy roots, hence i guess it involves some soil in it. I hope it is not so hot. Tomorrow i plan to call the manufacturer to learn what is the ingredient of the medium exactly.
 
Alienwidow

Alienwidow

Well-Known Member
Bane Theill said:
Hello Alienwidow. Thanks, i'll try not to overwater next time. To be honest, i thought i was not overwatering since i waited until top layer is dry and medium started to seperate from the cup, but for once i let them sit in the overrun water for half of a day, i think that caused them to be overwatered.

I unfortunately don't know if the medium includes any soil in it, mine is just a guess. Since it is almost impossible for me to purchase a well known brand in my country, i bought a local mixture. It is sold under the name of peat but on the package it says it includes N P K that helps the plants to grow healthy roots, hence i guess it involves some soil in it. I hope it is not so hot. Tomorrow i plan to call the manufacturer to learn what is the ingredient of the medium exactly.
Click to expand...
Thats a really good idea. You can ask them how long before the average tomato plant is going to need fertilizer in the soil. It is a common mistake for new growers to leave plants in water catchers, over watering in general is a new grower problem.
The next two most common new grower problems are over fertilization, and calmag deficiancies. Some new growers think that a teeeny plant needs the full dose of fertilizer.....nope. A single full sized thriving plant under a 1000 watt hps bulb needs full dose and sometimes thats even too much. Calmag is two different elements calcium, and magnesium. The plant uses both to the point of being almost considered macro nutrient status. Theyre micro nutrients but really important and heavily consumed. Most growers suppliment with a calmag supplement starting at as early as week two in small doses at first and building up to just over 100ppm in bloom for large plants. Read your fertilizers break down to see if it supplies cal or mag before adding a ton more though.
You seem like a bright guy so i have faith that with the help of the search bar located above, and some reading through riu archives, that youll have yourself a great plant in no time. ;)
 
B

Bane Theill

New Member
Alienwidow said:
Thats a really good idea. You can ask them how long before the average tomato plant is going to need fertilizer in the soil. It is a common mistake for new growers to leave plants in water catchers, over watering in general is a new grower problem.
The next two most common new grower problems are over fertilization, and calmag deficiancies. Some new growers think that a teeeny plant needs the full dose of fertilizer.....nope. A single full sized thriving plant under a 1000 watt hps bulb needs full dose and sometimes thats even too much. Calmag is two different elements calcium, and magnesium. The plant uses both to the point of being almost considered macro nutrient status. Theyre micro nutrients but really important and heavily consumed. Most growers suppliment with a calmag supplement starting at as early as week two in small doses at first and building up to just over 100ppm in bloom for large plants. Read your fertilizers break down to see if it supplies cal or mag before adding a ton more though.
You seem like a bright guy so i have faith that with the help of the search bar located above, and some reading through riu archives, that youll have yourself a great plant in no time. ;)
Click to expand...
Hey thanks :) I've been reading about growing for at least 3-4 months, but when it comes to actually growing the babies, i am paralyzed as if i know nothing :) Especially after everything went wrong.

I will definitely take your advices into consideration.

I recently discovered rollitup, and i am stunned about the content and the excessive number of helpful users here. I definitely keep on reading at this site throughout my grow, and maybe i will be able to give advice to newbies thereafter :)
 
Alienwidow

Alienwidow

Well-Known Member
Bane Theill said:
Hey thanks :) I've been reading about growing for at least 3-4 months, but when it comes to actually growing the babies, i am paralyzed as if i know nothing :) Especially after everything went wrong.

I will definitely take your advices into consideration.

I recently discovered rollitup, and i am stunned about the content and the excessive number of helpful users here. I definitely keep on reading at this site throughout my grow, and maybe i will be able to give advice to newbies thereafter :)
Click to expand...
If you leave plants in water catchers, which is good for cleanliness. Elevate them so the plant doesnt soak in water, or reabsorb nutrients leached from soil. Any mold resistant materials work. Plastic, stone, or even wood work.
 
daloudpack

daloudpack

Well-Known Member
i agree with what everyone else said.... make sure u got drain holes and stop using clear cups... let ur cups go really dry ur trying to promote root growth at this point.....by letting the soil go dry ur roots will chase the moisture down to ur drain holes giving u a healthier plant
 
B

Bane Theill

New Member
Alienwidow said:
If you leave plants in water catchers, which is good for cleanliness. Elevate them so the plant doesnt soak in water, or reabsorb nutrients leached from soil. Any mold resistant materials work. Plastic, stone, or even wood work.
Click to expand...
I'm using these little ceramic plates as water catchers since yesterday. I was using glass plates before, but the bottom of my cups are clear, hence allowing the light to penetrate through the roots
P_20160116_125421.jpg
They are opaque, hence does not let the light to reach to the bottom of the plants.

daloudpack said:
i agree with what everyone else said.... make sure u got drain holes and stop using clear cups... let ur cups go really dry ur trying to promote root growth at this point.....by letting the soil go dry ur roots will chase the moisture down to ur drain holes giving u a healthier plant
Click to expand...
Never again. As I explained earlier, I covered them with paper tape and painted outside with black paint. But the bottom is still vulnerable to light, so i am using the plates that i show above. There are plenty of holes beneath the cup, so i think drainage is not the issue. I havent known that drying the soil helps them to grow roots, i thought it may kill the plant. I will mildly let them be dried after your suggestion, thanks.
 
Alienwidow

Alienwidow

Well-Known Member
Bane Theill said:
I'm using these little ceramic plates as water catchers since yesterday. I was using glass plates before, but the bottom of my cups are clear, hence allowing the light to penetrate through the roots
View attachment 3587095
They are opaque, hence does not let the light to reach to the bottom of the plants.



Never again. As I explained earlier, I covered them with paper tape and painted outside with black paint. But the bottom is still vulnerable to light, so i am using the plates that i show above. There are plenty of holes beneath the cup, so i think drainage is not the issue. I havent known that drying the soil helps them to grow roots, i thought it may kill the plant. I will mildly let them be dried after your suggestion, thanks.
Click to expand...
Let me alleviate any worry of this being caused by translucent containers. There is no way in hell this is being caused by light touching roots. Ive seen plenty of 2 litre pop bottle grows that turn out great. This is user error and not an equipment issue.
 
B

Bane Theill

New Member
Alienwidow said:
Let me alleviate any worry of this being caused by translucent containers. There is no way in hell this is being caused by light touching roots. Ive seen plenty of 2 litre pop bottle grows that turn out great. This is user error and not an equipment issue.
Click to expand...
OK, good to know. But no hurt can be made by being extra precautious :)
 
*BUDS

*BUDS

Well-Known Member
Bane Theill said:
Hello Alienwidow. Thanks, i'll try not to overwater next time. To be honest, i thought i was not overwatering since i waited until top layer is dry and medium started to seperate from the cup, but for once i let them sit in the overrun water for half of a day, i think that caused them to be overwatered.

I unfortunately don't know if the medium includes any soil in it, mine is just a guess. Since it is almost impossible for me to purchase a well known brand in my country, i bought a local mixture. It is sold under the name of peat but on the package it says it includes N P K that helps the plants to grow healthy roots, hence i guess it involves some soil in it. I hope it is not so hot. Tomorrow i plan to call the manufacturer to learn what is the ingredient of the medium exactly.
Click to expand...
The medium is no good for growing dope indoor. Try a better medium next grow with 30% perlite.
Reduce watering , dont feed, dont re pot and hope they bounce back.
 
*BUDS

*BUDS

Well-Known Member
Bane Theill said:
I'm using these little ceramic plates as water catchers since yesterday. I was using glass plates before, but the bottom of my cups are clear, hence allowing the light to penetrate through the roots
View attachment 3587095
They are opaque, hence does not let the light to reach to the bottom of the plants.



Never again. As I explained earlier, I covered them with paper tape and painted outside with black paint. But the bottom is still vulnerable to light, so i am using the plates that i show above. There are plenty of holes beneath the cup, so i think drainage is not the issue. I havent known that drying the soil helps them to grow roots, i thought it may kill the plant. I will mildly let them be dried after your suggestion, thanks.
Click to expand...
This is not the issue here, light wont affect plant roots like a bad medium.
 
B

Bane Theill

New Member
*BUDS said:
The medium is no good for growing dope indoor. Try a better medium next grow with 30% perlite.
Reduce watering , dont feed, dont re pot and hope they bounce back.
Click to expand...
That was my worst dream. I always hoped I f*cked up at something else but not the medium. It involves 5-10% perlite and I thought that it will be enough. It seems it is not. Asking more than 10 gardening shops, I could not find any perlite, so i skipped this step. Hope I can save them by less watering.

If they live up to that time, I will definitely use more perlite in the mix for their new pots.
 
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