Urgent help required - Growing in Coco Coir - International Cannagraphic Magazine Forums

mrdankful · 02-19-2018, 07:28 PM

Hello mates

I am growing six shooters in coco+perlite mixture. They are about 22-23 days old. I feed them with AN micro+grow+bloom as per the feed chart every alternate day.

I have 2 14L pots. 1 plant in 1 pot and 2 plants in one pot. Everything was fine till I faced this issue (refer images)

One of the 2 plants in 1 pot started showing these signs first. Initially I thought it's a nute burn so i flushed it but then I realised it can't be a nute burn as I feed all the plants the same thing. Upon research I deduced that I might have cal mag deficiency so I fed it hydrated lime, things settled down but only for a day. Now the issue sprung back up.

Please help me out.

Thanks in advance

Lester Beans · 02-20-2018, 02:09 AM

Hi!

First off when using coco you want to feed every watering, careful to not let the media dry out.

Make sure your pH is 5.9-6.1

And lastly, I can't tell from that pic, a full plant pic and some better pics of affected area would help for a solid diagnose.

Itsmychoice · 02-20-2018, 04:47 AM

They look small to be in such big pots and being watered every other day. I would make sure I was feeding them around 400 ppms and nothing more and probably a lot less often until you see roots coming out the bottoms of the pots. Feed them when the containers feel light and feed them 2 liters or so and pick them up to feel how heavy they feel and don't feed them again until they are light, might be 5 or more days depending on temps and humidity. I would focus more on temp and humidity. Don't worry about those leaves look at the new growth.

mrdankful · 02-20-2018, 05:00 AM

I do water it often without letting it dry.

Attached new pictures.

So the spots appear as light green spots and eventually turn light brown

Itsmychoice · 02-20-2018, 05:12 AM

Those spots won't go away and the tops look good. Focus on light feedings when they dry out a little. It's more important to not let them dry out later in flower because the feedings are stronger and the plants more needy, drying out leaves residuals and it makes it difficult to balance without a good flush. In veg letting the pots get lighter/dryer before feeding will promote better roots especially early on. Make sure temp, humidity and co2 are good. Don't worry about those lower leaves.

mrdankful · 02-20-2018, 05:26 AM

Quote:

Originally Posted by Itsmychoice

They look small to be in such big pots and being watered every other day. I would make sure I was feeding them around 400 ppms and nothing more and probably a lot less often until you see roots coming out the bottoms of the pots. Feed them when the containers feel light and feed them 2 liters or so and pick them up to feel how heavy they feel and don't feed them again until they are light, might be 5 or more days depending on temps and humidity. I would focus more on temp and humidity. Don't worry about those leaves look at the new growth.

They are in 14L containers. They would be around 10 inches tall and they do have roots coming out of the bottom of the containers.

New growth is booming! They grow about .5-.8 inches daily, new and good leaves coming daily. Existing ones grow bigger.

The spots appear near the tips of older leaves, it's creeping up from the bottom.

Itsmychoice · 02-20-2018, 05:43 AM

I run 2 liter pots for the first 3-4 weeks and transplant to 12 liter when they are 20 inches tall. I feed at 400 ppms through veg and 6-650 all through flower. Ph has to be between 5.8-6.2 and then as it progresses into late flower I would tighten that to 6.0-6.1.

mrdankful · 02-20-2018, 09:40 AM

Thanks for the inputs mate

Does this seem like potassium abundance/deficiency or calcium deficiency to you?

I was trying to figure out the reason for these spots

mrdankful · 02-20-2018, 09:43 AM

Also if you check the 2nd picture of the leaf that I initially posted you can see that the spots appear as light green slowly turn to light brown finally turning to big brown spots

Itsmychoice · 02-20-2018, 08:39 PM

People who think they can tell what is stressing a plant from looking at pictures are guessing. Chasing those guess by adding products to your feeding will rarely help and usually hurts. Just focus on perfecting all your inputs. Temp between 75-80, humidity between 70-85, airflow or co2, perfect distance to light source, feeding 400ppms in veg at a ph of 5.8-6.2. Recalibrate ph meter every week. What lighting are you using? Those lower leaves might be getting shaded. Did you spray the plants with anything?

02-19-2018, 07:28 PM	#1
mrdankful Newbie Join Date: Feb 2018 Posts: 5	Urgent help required Hello mates I am growing six shooters in coco+perlite mixture. They are about 22-23 days old. I feed them with AN micro+grow+bloom as per the feed chart every alternate day. I have 2 14L pots. 1 plant in 1 pot and 2 plants in one pot. Everything was fine till I faced this issue (refer images) One of the 2 plants in 1 pot started showing these signs first. Initially I thought it's a nute burn so i flushed it but then I realised it can't be a nute burn as I feed all the plants the same thing. Upon research I deduced that I might have cal mag deficiency so I fed it hydrated lime, things settled down but only for a day. Now the issue sprung back up. Please help me out. Thanks in advance Attached Thumbnails
	Quote

02-20-2018, 02:09 AM	#2
Lester Beans Frequent Flyer Join Date: Nov 2011 Location: ~ In The Garden Pulling Weeds ~ Posts: 3,223	Hi! First off when using coco you want to feed every watering, careful to not let the media dry out. Make sure your pH is 5.9-6.1 And lastly, I can't tell from that pic, a full plant pic and some better pics of affected area would help for a solid diagnose.
	Quote 1 members found this post helpful.

02-20-2018, 04:47 AM	#3
Itsmychoice Member Join Date: Apr 2015 Location: Between the creeks Posts: 198	It's hard to tell They look small to be in such big pots and being watered every other day. I would make sure I was feeding them around 400 ppms and nothing more and probably a lot less often until you see roots coming out the bottoms of the pots. Feed them when the containers feel light and feed them 2 liters or so and pick them up to feel how heavy they feel and don't feed them again until they are light, might be 5 or more days depending on temps and humidity. I would focus more on temp and humidity. Don't worry about those leaves look at the new growth.
	Quote

02-20-2018, 05:00 AM	#4
mrdankful Newbie Join Date: Feb 2018 Posts: 5	I do water it often without letting it dry. Attached new pictures. So the spots appear as light green spots and eventually turn light brown Attached Thumbnails
	Quote

02-20-2018, 05:12 AM	#5
Itsmychoice Member Join Date: Apr 2015 Location: Between the creeks Posts: 198	They are doing fine Those spots won't go away and the tops look good. Focus on light feedings when they dry out a little. It's more important to not let them dry out later in flower because the feedings are stronger and the plants more needy, drying out leaves residuals and it makes it difficult to balance without a good flush. In veg letting the pots get lighter/dryer before feeding will promote better roots especially early on. Make sure temp, humidity and co2 are good. Don't worry about those lower leaves.
	Quote

02-20-2018, 05:43 AM	#7
Itsmychoice Member Join Date: Apr 2015 Location: Between the creeks Posts: 198	For reference I run 2 liter pots for the first 3-4 weeks and transplant to 12 liter when they are 20 inches tall. I feed at 400 ppms through veg and 6-650 all through flower. Ph has to be between 5.8-6.2 and then as it progresses into late flower I would tighten that to 6.0-6.1.
	Quote

02-20-2018, 09:40 AM	#8
mrdankful Newbie Join Date: Feb 2018 Posts: 5	Thanks for the inputs mate Does this seem like potassium abundance/deficiency or calcium deficiency to you? I was trying to figure out the reason for these spots
	Quote

02-20-2018, 09:43 AM	#9
mrdankful Newbie Join Date: Feb 2018 Posts: 5	Also if you check the 2nd picture of the leaf that I initially posted you can see that the spots appear as light green slowly turn to light brown finally turning to big brown spots
	Quote

02-20-2018, 08:39 PM	#10
Itsmychoice Member Join Date: Apr 2015 Location: Between the creeks Posts: 198	You have to be careful People who think they can tell what is stressing a plant from looking at pictures are guessing. Chasing those guess by adding products to your feeding will rarely help and usually hurts. Just focus on perfecting all your inputs. Temp between 75-80, humidity between 70-85, airflow or co2, perfect distance to light source, feeding 400ppms in veg at a ph of 5.8-6.2. Recalibrate ph meter every week. What lighting are you using? Those lower leaves might be getting shaded. Did you spray the plants with anything?
	Quote 2 members found this post helpful.