Curled Leaves? Why?

Hello everyone!

My plant has been doing great; however, the top of the plant's leaves are curling downward. I am assuming it is too close to the light (approximately 4-6in), but I always hate to assume I know what I'm doing! Any information would help! Thank you!!

What kind of light are you using? What is your medium and what are you feedin, and how much? What ph have you been feeding?

More info?
Substrate
Water source (ppms)
Base nutes (ppms)
Additives
Temp and RH

If you don't include the above, its really hard to get any kind concise answers because all anyone can do is give you their best educated guess.

From the pics alone, it look pH related and over watered/something going on in the rootzone.

iShatterBladderz said:

What kind of light are you using? What is your medium and what are you feedin, and how much? What ph have you been feeding?

Click to expand...

It's a 600 watt equivalent, 4000k light. The medium is Miracle Grow (Unfortunately, it is my first plant so it's more of a learning process), I fed it a bit of FoxFarm plant food at the beginning, then realized I shouldn't because it can cause nutrient burn. The pH is unknown. I've been waiting on my pH Meter. I'm aware it's not the best set, but that's my purpose for being here.

Tangerine_ said:

More info?
Substrate
Water source (ppms)
Base nutes (ppms)
Additives
Temp and RH

If you don't include the above, its really hard to get any kind concise answers because all anyone can do is give you their best educated guess.

From the pics alone, it look pH related and over watered/something going on in the rootzone.

Click to expand...

Hello,

I've been doing a lot of research, but I'm still unfamiliar with some of the cultivation jargon. I'll tell you what I know in certainty. I am using purified water (enough to get the soil moisturized), I water it whenever the soil dries up. The pH is unknown currently as I do not have a pH meter yet. I've used FoxFarm in the early stages of the plant and realized I was burning my plant, so I stopped. The soil is a Miracle Grow (Unfortunately). The temperature is regulated around 71-73°F. I have a 600 watt equivalent LED 4000k light.

I apologize if this doesn't help for a straight answer, but I am still trying to figure this cultivation thing out! Any feedback is appreciated!

TopherJames said:

It's a 600 watt equivalent, 4000k light. The medium is Miracle Grow (Unfortunately, it is my first plant so it's more of a learning process), I fed it a bit of FoxFarm plant food at the beginning, then realized I shouldn't because it can cause nutrient burn. The pH is unknown. I've been waiting on my pH Meter. I'm aware it's not the best set, but that's my purpose for being here.

Click to expand...

Ok, so theres a few things going on.
First is the pH. Its very important to know your pH, unless you're growing in amended soil with a decent water source, but that's another topic.
Fox Farm (along with most other nutrients) tend to have a low pH and need to be adjusted to an acceptable range. (6.0-6.4 is usually fine in most substrates, but again, that's another topic)
You didn't list your water source. Tap and well water can vary.
The medium probably has some time release nutrients, so going forward, water only. Again, its very important to correct your pH.

For your light, go by what it draws from the wall, not what a manufacturers claim. They're often overexaggerated for marketing purposes.

And dont feel like you need to be a "pro" to post and ask questions. Everyone starts their growing journey somewhere.


Oh and welcome to RIU

Tangerine_ said:

Ok, so theres a few things going on.
First is the pH. Its very important to know your pH, unless you're growing in amended soil with a decent water source, but that's another topic.
Fox Farm (along with most other nutrients) tend to have a low pH and need to be adjusted to an acceptable range. (6.0-6.4 is usually fine in most substrates, but again, that's another topic)
You didn't list your water source. Tap and well water can vary.
The medium probably has some time release nutrients, so going forward, water only. Again, its very important to correct your pH.

For your light, go by what it draws from the wall, not what a manufacturers claim. They're often overexaggerated for marketing purposes.

And dont feel like you need to be a "pro" to post and ask questions. Everyone starts their growing journey somewhere.


Oh and welcome to RIU

Click to expand...

Thank you for all of this! I appreciate the positivity! I've been nervous to ask in fear of getting "negative" feedback. I will definitely keep an eye on my pH and update this thread!
In addition to that, I've been buying purified water from the store nearby me! I would like to purchase my own purification kit, but it isn't cheap!
Also, I'll keep in mind the lighting situation!

Thank you for the welcoming and informative reply!

No problem at all. Happy to help. Everyone should grow their own.

Also, you can pick up a EC/PPM meter fairly cheap. I have a few 8 dollar meters that work just as well as my Blue Lab.
Same with PH meters. The inexpensive meters need to be calibrated more often but they're usually accurate enough.
You can use litmus strips from the aquarium/pool isle of most any Walmart or similar dept store in a pinch.
The combo meters I stay away from. I just haven't had good luck with them so I advise getting individual meters.

Purified water tends to have a pH of 7. Its too high unless growing in a richly amended active soil. (microbes regulate pH in living soil)

For further, reading check search articles on the importance of ph.
This is good one to start with

TopherJames said:

Hello,

I've been doing a lot of research, but I'm still unfamiliar with some of the cultivation jargon. I'll tell you what I know in certainty. I am using purified water (enough to get the soil moisturized), I water it whenever the soil dries up. The pH is unknown currently as I do not have a pH meter yet. I've used FoxFarm in the early stages of the plant and realized I was burning my plant, so I stopped. The soil is a Miracle Grow (Unfortunately). The temperature is regulated around 71-73°F. I have a 600 watt equivalent LED 4000k light.

I apologize if this doesn't help for a straight answer, but I am still trying to figure this cultivation thing out! Any feedback is appreciated!

Click to expand...

Do you have a model for the light you’re using? Unfortunately the ”LED Market” is a lot of snake oil, exaggerated claims and misleading labels. Not to say there isn’t good LED lights out there, I consider myself a “LEDophile”, all I run is LED. i am a tech nerd so this kind of stuff comes natural to me. I’ve spent ridiculous amounts of money buying lights just to take them apart and test the efficiency of the individual diodes, then reassemble them and sell them at a reduced price. It’s worth it to me because I know exactly where I stand on the lights I purchase and/or recommend, plus the companies I know I can trust and don’t have to tear down their lights, but my better half doesn’t quite agree, she likes to call it wasting money.

i also agree with the importance of a PH pen. I don’t know a whole lot about Miracle Grow soil, but I imagine that ol Tangie is correct, it probably has time release nutrients included, and IME, a lot of the “mainstream” commercial soils run hot.

The description of the light is a Mars Jydro TS 600W LED 2x2. Any information helps! And from what I hear, Miracle Grow runs hot compared to other soils.

Tangerine_ said:

No problem at all. Happy to help. Everyone should grow their own.

Also, you can pick up a EC/PPM meter fairly cheap. I have a few 8 dollar meters that work just as well as my Blue Lab.
Same with PH meters. The inexpensive meters need to be calibrated more often but they're usually accurate enough.
You can use litmus strips from the aquarium/pool isle of most any Walmart or similar dept store in a pinch.
The combo meters I stay away from. I just haven't had good luck with them so I advise getting individual meters.

Purified water tends to have a pH of 7. Its too high unless growing in a richly amended active soil. (microbes regulate pH in living soil)

For further, reading check search articles on the importance of ph.
This is good one to start with

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Growing weed can be easy, though some marijuana grow tutorials make it seem like you need a degree in horticulture. Learn how to plant a seed & start growing with as little time and effort as possible, or read our advanced tutorials for monstrous yields!

www.growweedeasy.com

Click to expand...

Awesome read! Thank you for this information! I'll have to look into that pH meter! I appreciate all of this!

TopherJames said:

The description of the light is a Mars Jydro TS 600W LED 2x2. Any information helps! And from what I hear, Miracle Grow runs hot compared to other soils.

Click to expand...

Ah, I’m familiar with those lights. Mars actually reached out to me after reading a review trashing one of their purple lights, and sent me a 2x4 tent and their sp250 light to review, and I’ve still got it going in one of the spare bedrooms. Different style of light than yours, but they use the same diodes, Epistar’s SMD diodes. Epistar has put out a lot of shit diodes but theIr SMD diodes are actually pretty good. Not quite on the same level as Samsung’s LM301B/H diodes, they’re pretty comparable to the lm561C diodes.

Your light pulls 100w from the wall, so you won’t want to rely on it to power anything bigger than a 2x2 tent. I run those lights at 18” from the plant during veg, and 12” from the plant during flower.

Miracle grow has a tendency to use too much N for cannabis, it wouldn't be bad if it weren't time released. Otherwise you could just flush the soil. But with regular MG, the extended release nutes only activate further the more you water...really takes your control away as far as nute control goes.

TopherJames said:

Hello,

I've been doing a lot of research, but I'm still unfamiliar with some of the cultivation jargon. I'll tell you what I know in certainty. I am using purified water (enough to get the soil moisturized), I water it whenever the soil dries up. The pH is unknown currently as I do not have a pH meter yet. I've used FoxFarm in the early stages of the plant and realized I was burning my plant, so I stopped. The soil is a Miracle Grow (Unfortunately). The temperature is regulated around 71-73°F. I have a 600 watt equivalent LED 4000k light.

I apologize if this doesn't help for a straight answer, but I am still trying to figure this cultivation thing out! Any feedback is appreciated!

Click to expand...

I think thats is a virus

TopherJames said:

The description of the light is a Mars Jydro TS 600W LED 2x2. Any information helps! And from what I hear, Miracle Grow runs hot compared to other soils.

Click to expand...

I have this same light... I use it for germinating seedlings, so I seriously doubt the light is too strong. While Mars Hydro is getting a little better, they still toe the "snake oil salesman" line when they name their products.

They say the TS 600 is the equivalent of a 600 watt HPs light...

Absolute hogwash.

As the"Bladder shatterer" noted above, that light will barely pull 100w from the wall. No way it is responsible for that leaf curl on it's own. I would be very interested in you water PH and it's TDS.

Here is a pic of leaf curl caused by too much light. I'm not implying that this is the only way plants will respond to too much light, but it is certainly one way.



This was caused by a Helios 1200 LED (420 watt actual draw with 12x Cree arrays).

That TS 600 isn't junk, but for Mars Hydro to claim it will replace a 600w HPS is laughable.

Dish unfortunetly is correct. Personally, I love those type of LED's to supplement my MH/HPS setup. When I was still saving up for my CMH lights, I used Roleadro LED panels that had some UV and IR diodes to supplement my HIDs, and you could tell that there was a significant response from the plants even though the Roleadros were only 150ish $ and only pulled 200w from the wall. If you're sketched out by the old fashioned HPS and MH, and the top notch LED brands, you may consider taking a gander at CMH lighting. I got my 315w's for under 400$ a piece, ballast fixture bulb and all, off of amazon.