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LED Burn, Pest problem, ph problem or root rot? light green leavs and brown roots.

M

mkweed

Member
hello I made a post yesterday about a pest problem I had here. However those were a recent development (as far as i know) and I have noticed the leaves are a bit of a light green on the new sprouting leaves. Under my led light the color difference is noticeable, under a flash light, it can be as well. Under normal light bulbs I cant see it all.
And one of my plants has dry'ish looking brown roots, while another plants has a few tips with a small tinge of brown.

Im new to growing and I have no clue which it could be because I feel like I'm messing up everywhere.


LED Burn:
the original height was about 18 inches
The height from the light has changed a few times but the closest my seedlings have been is ~14 inches for about a week.
After I found a supposed ant colony, I tossed the tray and moved it lower to about 24 inches because I had it on a stand.
Pest problem:
these supposed ants were all over the roots and in the rapid rooter/root riot. I'm thinking they could of damaged it. To remove them i did move the plants a lot and remove them from their trays multiple times to kill the pests which are gone (i haven't seen any in over 20 hours)
Ph levels:
Ill have to admit because of my schedule I haven't taken the time to measure the Ph often, Sometimes I do sometimes I don't, sometimes I put in straight up normal water.
Root Rot:
While in the seedling tray with the dome, I'm think making all the moisture could of caused it?
Nute Burn:
I did add nutrients to the seedling water for 2 days for a total of 4 waterings with about 8 drops of veg nutrients in a ~5oz cup but stopped out of concern of nutrient burn.

So as you can tell I'm new to this and have probably made a myriad of mistakes but id like to fix it as much as I can.
Im scared to feed them water as I dont know what the issue is. I hope someone here can help me.

some pics:
leavecolor.png
brownroots.png
20191209_201706.png
20191209_201613.png
 
Nabbers

Nabbers

Well-Known Member
Those roots do like kinda brown. You can add a product with Bacillus Amyloliquefaciens - like Hydroguard, but there are many others. That beneficial microbe will fight off root rot microbes. And see if your nutrient blend contains silica - not all will because it's not considered an essential nutrient - if not, I add a little RAW Silica to my water. Silica strengthens up cell walls making the stems more robust and the roots harder to infect.

My last grow started out looking a lot like that, though, and I've learned that my plants just don't like much light when they're young. I have to switch off the blue and red and run white only and still keep it at least a couple feet above them while they acclimate. I try to find the point where they start to stretch and then get a little closer. It's crazy how little light they seem to need when they're young. Don't worry, though, my lime-green seedlings still grew up into large, beautiful plants. Yours should be fine.
 
M

mkweed

Member
Nabbers said:
Those roots do like kinda brown. You can add a product with Bacillus Amyloliquefaciens - like Hydroguard, but there are many others. That beneficial microbe will fight off root rot microbes. And see if your nutrient blend contains silica - not all will because it's not considered an essential nutrient - if not, I add a little RAW Silica to my water. Silica strengthens up cell walls making the stems more robust and the roots harder to infect.

My last grow started out looking a lot like that, though, and I've learned that my plants just don't like much light when they're young. I have to switch off the blue and red and run white only and still keep it at least a couple feet above them while they acclimate. I try to find the point where they start to stretch and then get a little closer. It's crazy how little light they seem to need when they're young. Don't worry, though, my lime-green seedlings still grew up into large, beautiful plants. Yours should be fine.
Click to expand...
That does give me a little bit of relief. Do you think 2 feet (70cm) from the light is a good distance or should I bring it down?
 
Nabbers

Nabbers

Well-Known Member
Would depend on your light source. I'm running a Viparspectra Par600 that puts up 680 uMoles at 24". I have to go for 36" to get the appropriate intensity for seedlings. Different lights even at the same wattage can produce a different amount of PAR. Some are more efficient at staying within the usable light spectrum, some waste energy on unusable light, some waste energy on heat. So you need to look up your specific light's charts or use a gauge to be sure.
 
FresnoFarmer

FresnoFarmer

Well-Known Member
Nabbers said:
Would depend on your light source. I'm running a Viparspectra Par600 that puts up 680 uMoles at 24". I have to go for 36" to get the appropriate intensity for seedlings. Different lights even at the same wattage can produce a different amount of PAR. Some are more efficient at staying within the usable light spectrum, some waste energy on unusable light, some waste energy on heat. So you need to look up your specific light's charts or use a gauge to be sure.
Click to expand...
That’s about where I have mine for seedlings, almost the same wattage. 300w cob
 
Richard Drysift

Richard Drysift

Well-Known Member
The plants look fine maybe a little hungry. I think your choice in soil mix could be the cause of some issues. I see no aeration in the mix itself which could just be leaving them wet too long. Bad drainage equates to overwatering which can also attract insects. You have an ant problem; saw your other post. It not a big deal put down combat ant trap or terra gel; ants are harmless. A sprinkle of diatomaceous earth on top of the soil would kill off any larvae and help prevent gnats/thrips. Prevention is always easier than treatment.
I would add some perlite and worm castings to your mix for the next transplants to a larger pot.
Nothing wrong with light placement distance or ph. Don't ph the water or even worry about ph in a soil grow. Take good care of the soil and the plants will do their thing without any help.
Don't be afraid to feed them they are getting pale. You can use nutrients if you want but consider just adding compost and a slow release fertilizer like chicken or cow manure to the mix when you pot up next time along with the perlite.
 
Hydrotech364

Hydrotech364

Well-Known Member
mkweed said:
hello I made a post yesterday about a pest problem I had here. However those were a recent development (as far as i know) and I have noticed the leaves are a bit of a light green on the new sprouting leaves. Under my led light the color difference is noticeable, under a flash light, it can be as well. Under normal light bulbs I cant see it all.
And one of my plants has dry'ish looking brown roots, while another plants has a few tips with a small tinge of brown.

Im new to growing and I have no clue which it could be because I feel like I'm messing up everywhere.


LED Burn:
the original height was about 18 inches
The height from the light has changed a few times but the closest my seedlings have been is ~14 inches for about a week.
After I found a supposed ant colony, I tossed the tray and moved it lower to about 24 inches because I had it on a stand.
Pest problem:
these supposed ants were all over the roots and in the rapid rooter/root riot. I'm thinking they could of damaged it. To remove them i did move the plants a lot and remove them from their trays multiple times to kill the pests which are gone (i haven't seen any in over 20 hours)
Ph levels:
Ill have to admit because of my schedule I haven't taken the time to measure the Ph often, Sometimes I do sometimes I don't, sometimes I put in straight up normal water.
Root Rot:
While in the seedling tray with the dome, I'm think making all the moisture could of caused it?
Nute Burn:
I did add nutrients to the seedling water for 2 days for a total of 4 waterings with about 8 drops of veg nutrients in a ~5oz cup but stopped out of concern of nutrient burn.

So as you can tell I'm new to this and have probably made a myriad of mistakes but id like to fix it as much as I can.
Im scared to feed them water as I dont know what the issue is. I hope someone here can help me.

some pics:
View attachment 4434409
View attachment 4434408
View attachment 4434407
View attachment 4434406
Click to expand...
I was gone for 2 days longer than expected once and the fukn RR's turned solid, had to slice them down the sides with a blade to get them to allow the main stalks to overcome the little nooses...
 
M

mkweed

Member
FresnoFarmer said:
How many watts is your light?
Click to expand...
Its a Maxisun 1200w supposed equivalent for a 600w hps light. Amazon link here.

pulpoinspace said:
hi, i think you've just left it in that rapid rooter too long.

it should have been put in soil or some other medium and fed days ago.
Click to expand...
Interesting. Do you think theres without a doubt an overdue for a transplant? Would 1 more day be ok or is it super urgent I transplant it now?

Richard Drysift said:
The plants look fine maybe a little hungry. I think your choice in soil mix could be the cause of some issues. I see no aeration in the mix itself which could just be leaving them wet too long. Bad drainage equates to overwatering which can also attract insects. You have an ant problem; saw your other post. It not a big deal put down combat ant trap or terra gel; ants are harmless. A sprinkle of diatomaceous earth on top of the soil would kill off any larvae and help prevent gnats/thrips. Prevention is always easier than treatment.
I would add some perlite and worm castings to your mix for the next transplants to a larger pot.
Nothing wrong with light placement distance or ph. Don't ph the water or even worry about ph in a soil grow. Take good care of the soil and the plants will do their thing without any help.
Don't be afraid to feed them they are getting pale. You can use nutrients if you want but consider just adding compost and a slow release fertilizer like chicken or cow manure to the mix when you pot up next time along with the perlite.
Click to expand...
Thanks for the advice. Appreciated.
 
M

mkweed

Member
Hydrotech364 said:
I was gone for 2 days longer than expected once and the fukn RR's turned solid, had to slice them down the sides with a blade to get them to allow the main stalks to overcome the little nooses...
Click to expand...
You removed the seedling from the rooter? Is that a common practice?
 
pulpoinspace

pulpoinspace

Well-Known Member
yes its without a doubt overdue. tomorrow is fine probably. it will recover if you put it in a high quality soil, or if your put it in a hydroponic medium and start giving it nutrients. i transplant seedlings from rapid rooter into soil as soon as they poke and the tap root comes out the bottom. never been a problem. clones i wait a bit longer.
 
GBAUTO

GBAUTO

Well-Known Member
I will transplant the RR as soon as I see a tap root poking out the bottom. I hand water the basket until roots drop enough to get into solution.
and I never remove them from the RR-that's why I use it in the first place.
 
sandman83

sandman83

Well-Known Member
I've had better look puttting the RR in my hydro systems sooner rather than later as well. Once I see a tap root poking out the bottom into hydroton it goes, hopefully not stopping.
 
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