Iron/mag deficiency in coco.

[issack]

Ok I'm a experienced grower and I have never had this before. And this is the second time I've ever used coco. So I'm a total newb on coco obviously.
The first time was my lest run in this room and I got over 13 pounds out of it. The last run I planted my clones into coco from promix in the cups. This time I came straight from my power cloner into the coco. They vegged under floros for a week then under HPS turned down to 600 for the last 3 days. Now they are transplanted into 2 gallons.
It's looking as though I have a mag/iron deficiency. I'm using floranova and my ppm is at 400. RO water. And ph is at 6.5. I did notice slight symptoms of this on my last run. But they pulled out of it.
I have about 25 gallons in my rez tank and I just added about 1.5 mil a gallon of cal mag and gave them a little watering of it..
Is this comon in coco.? Seems like I hear about mag deficiency at a young stage alot.. any advice would be appreciated. I'm doing the same nute program I have been doing for years with awesome results. Only thing changed is using coco.

 

[packerfan79]

Magnesium deficiency is very common in coco, you need to supplement at least mag if not calcium and magnesium. Most people precharge coco with a weak nute solution, or calmag. If you have tap water that's a fairly low ec, it can provide the cal and mag. If you must use RO water supplement with cal mag or epsom salts. Coco can actually pull cal and mag out of the plant. Also some plants diesels mainly are cal mag whores .

Hope that helps

 

[issack]

Magnesium deficiency is very common in coco, you need to supplement at least mag if not calcium and magnesium. Most people precharge coco with a weak nute solution, or calmag. If you have tap water that's a fairly low ec, it can provide the cal and mag. If you must use RO water supplement with cal mag or epsom salts. Coco can actually pull cal and mag out of the plant. Also some plants diesels mainly are cal mag whores .

Hope that helps

Thank you, yes helps a lot. I did put in 1.5 mil a gallon of Cali magic cal/mag from general hydroponics in my rez this morning. Hope I see it green up soon. I'm not used to having almost yellow plants. It's killing me

 

[SamsonsRiddle]

i have to use 1-2tsp of epsom on top of .5ml/gal of calimagic - probably could use a little less now that i look at it, but don't have any problems showing.

 

[packerfan79]

1-2 teaspoons per gallon of Epsom salt seems to be a bit much to me. That being said I have not grown many mag whores, so I Will let the magwhore experts chime in with a better idea of how much to use.I think calmagic is a better choice than cal mag plus, 1:1ratio without the extra nitrogen and iron of cal mag plus.

 

[issack]

Thank you for the responses . I just bumped it to 2 mils a gallon I'll see what happens. I have never used Epsom salts before. My indoor past experience is in soil and flood and drain hydroton. This coco is all new stuff. I have large grows of outdoors greenhouse and I don't use calimagic at all. My tap water has a ton of mag in it. When i did, it gave me a mag overdose. So I'm just custom to no mag. This new RO water indoor coco is so new.

 

[soundman]

If you are growing in coco perlite mix you should lower your ph to 5.8ish. 6.5 is a little high.

 

[packerfan79]

Thank you for the responses . I just bumped it to 2 mils a gallon I'll see what happens. I have never used Epsom salts before. My indoor past experience is in soil and flood and drain hydroton. This coco is all new stuff. I have large grows of outdoors greenhouse and I don't use calimagic at all. My tap water has a ton of mag in it. When i did, it gave me a mag overdose. So I'm just custom to no mag. This new RO water indoor coco is so new.

A lot of people do 50-50 tap to ro water, or some combination of ro and tap. In your case RO with ca l mag supplementation would be the easiest way. Coco is a different beast it produces much better yields when you do multiple feeds per day. Also make sure you get at least 20 % runoff, don't allow the runoff to be reserved.

Thier are a couple really good threads on Coco, I would suggest you read them.they are a couple hundred pages so tons of information.

 

[issack]

If you are growing in coco perlite mix you should lower your ph to 5.8ish. 6.5 is a little high.

That is exactly what im doing. And i just went an checked and lowered to 5.8. It had spiked since yesterday. Grrr.

 

[issack]

A lot of people do 50-50 tap to ro water, or some combination of ro and tap. In your case RO with ca l mag supplementation would be the easiest way. Coco is a different beast it produces much better yields when you do multiple feeds per day. Also make sure you get at least 20 % runoff, don't allow the runoff to be reserved.

Thier are a couple really good threads on Coco, I would suggest you read them.they are a couple hundred pages so tons of information.

I am trying to stay away from tap water im my indoor grow because I use beneficial microbes in my water. Og biowar teas.
Yes the coco tree's method. It's what I am doing and did last time . Low EC and feed every 2 hours once root system is established well. Last run was over 13 pounds. Out of 43 plants . I'm doing the exact same thing as I did last run but this time is the first time that I transferred my clones into Coco and not from Pro mix. This is a shot of my last run few weeks ago. This is without ever adding cal mag. After reading all this and researching I'm amazed that I pulled this off. Lol

 

[soundman]

I am trying to stay away from tap water im my indoor grow because I use beneficial microbes in my water. Og biowar teas.
Yes the coco tree's method. It's what I am doing and did last time . Low EC and feed every 2 hours once root system is established well. Last run was over 13 pounds. Out of 43 plants . I'm doing the exact same thing as I did last run but this time is the first time that I transferred my clones into Coco and not from Pro mix. This is a shot of my last run few weeks ago. This is without ever adding cal mag. After reading all this and researching I'm amazed that I pulled this off. Lol

Nice setup and crop. Jealous.

 

[SamsonsRiddle]

you should be giving us advice!

 

[packerfan79]

Coco is easy peasy once you get the rules down

 

[issack]

you should be giving us advice!

Lol well other than this mag issue I have had great massive success indoors and outdoors. Just when you think you got it all on point something like this happens. Never fails. Growing is a constant learning process.

 

[issack]

Coco is easy peasy once you get the rules down

As i am learning them now. Thanks for all your info you're helping me understand these basics. They just got their first real watering with a fresh rez full of 3 mils calimagic per gallon and my regular nute program at 720ppm. I hate how slow the results are. I loose sleep when I have any slight issue. Especially in this new room. I'm new to coco and new to RO water. Still tripping out that I didn't have this issue the last grow. I'm thinking it's because I vegged in small cups of promix for a week under floros before they went into coco 2 gal pots under HPS. This time I vegged in cups of coco for a week. And it sucked all the mag out of the plants.
So I'm on this mag thing for sure. I'll taper off the mag as they grow. Floranova has a lot of mag in it already. But obviously not enough especially when I was to high in beginning on my PH.