mag deficiency?

lazypothead420

Well-Known Member
Okay so the leaves that were affected got alot worse but it don't seem like any new leaves are yellowing. Also got the leaf edges curling up a lil. I don't know what's going on with these plants but it's driving me nuts. I'm just patiently waiting for things to hopefully get better. Also, I've heard you don't really need to ph the water when growing organically, is this true?
 

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sirtalis

Well-Known Member
I don't understand, you're already foliar spraying CalMag weekly and the advice is to give it more CalMag?

What's your watering schedule? Are the pots fully dry before you water? It honestly looks like a nitrogen deficiency and a problem with how you water. Yellowing moving from the tips inward, on lower leaves only, is a clear sign of nitrogen deficiency.

Top dressing can take multiple waterings to fix a problem, whereas your fish fertilizer can give it a quick dose of nitrogen.
 
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lazypothead420

Well-Known Member
I don't understand, you're already foliar spraying CalMag weekly and the advice is to give it more CalMag?

What's your watering schedule? Are the pots fully dry before you water? It honestly looks like a nitrogen deficiency and a problem with how you water.
I just started doing the 2x weekly Epsom foliar the 13th of this month and this started happening on the 18th. Yeah the pots are dry before watering. I water once every 4 days or so.
 

sirtalis

Well-Known Member
I just started doing the 2x weekly Epsom foliar the 13th of this month and this started happening on the 18th. Yeah the pots are dry before watering. I water once every 4 days or so.
Did the plants have problems before the 2x weekly Epsom foliar?
 

lazypothead420

Well-Known Member
Nope, they were fine up until 6 days after the first foliar. I gave them their first foliar on the 13th then again on the 16th along with the first topdress of dr. Earth 4-4-4. Then the 18th was the begining yellowing.
 

sirtalis

Well-Known Member
Yea not to be an ass, but why are you trying to fix something that wasn't broken? The advice in this thread of giving it MORE of possibly what caused the problems is terrible.

FFOF in what looks like a 1 or 2 gal pot should run out of N by 6 weeks. A top dress one week ago isn't long enough to have broken down into usable nitrogen. Give it some fish fert and then stop foliar feeding.
 

lazypothead420

Well-Known Member
Yea not to be an ass, but why are you trying to fix something that wasn't broken? The advice in this thread of giving it MORE of possibly what caused the problems is terrible.

FFOF in what looks like a 1 or 2 gal pot should run out of N by 6 weeks. A top dress one week ago isn't long enough to have broken down into usable nitrogen. Give it some fish fert and then stop foliar feeding.
I was following what Kratos does in his grow with foliar feeding https://www.rollitup.org/t/the-capabilities-of-a-simple-soil-and-a-1000w-de-bulb-with-sips.1042751/ I gave em some Neptune's at half strength on the 22nd and I won't foliar anymore until I figure out what's going on. Would too much mag cause this? Also here's my grow journal if it helps at all https://www.rollitup.org/t/lazypotheads-4x4-critical-kush-geekbeast-grow.1045663/
Also I noticed it's happening more so on the more sativa phenos for some reason.
 
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sirtalis

Well-Known Member
I was following what Kratos does in his grow with foliar feeding https://www.rollitup.org/t/the-capabilities-of-a-simple-soil-and-a-1000w-de-bulb-with-sips.1042751/ I gave em some Neptune's at half strength on the 22nd and I won't foliar anymore until I figure out what's going on. Would too much mag cause this? Also here's my grow journal if it helps at all https://www.rollitup.org/t/lazypotheads-4x4-critical-kush-geekbeast-grow.1045663/
No, I think you're good. Sometimes if you overload one nute you can cause lockouts with others. Most mag deficiencies come in flower after the base soil is pretty depleted.

The guy says "Hit them with the monthly foliar last night. As mentioned in the first post of this thread, its the weekly Epsom Salt+ProTekt feed, but I added TM7 and Fish Hydrolysate."

My guess is the CalMag foliar isn't the cause of the problem, but you aren't giving them enough nitrogen. He's foliar feeding nitrogen (fish) as well.
 
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lazypothead420

Well-Known Member
No, I think you're good. Sometimes if you overload one nute you can cause lockouts with others. Most mag deficiencies come in flower after the base soil is pretty depleted.

The guy says "Hit them with the monthly foliar last night. As mentioned in the first post of this thread, its the weekly Epsom Salt+ProTekt feed, but I added TM7 and Fish Hydrolysate."

My guess is the CalMag foliar isn't the cause of the problem, but you aren't giving them enough nitrogen. He's foliar feeding nitrogen (fish) as well.
Okay, the NPK for the Neptune's is 2-3-1 do you think that has enough nitrogen? I really thought between the fresh FFOF premixed with dr.earth 4-4-4 would've had enough but this is my first time growing organic so what do I know lol. If it progresses should I give em another half strength dose of Neptune's? I don't want to over do it but not sure how much is enough. Thank you for all your help!
 

sirtalis

Well-Known Member
Ah welcome to organics, it's a blast. One thing that took me a while to understand at first is a top dress takes 3-4 weeks to break down. I have fish emulsion and kelp on hand if I need to fix N or K deficiency immediately.

Have you heard of compost tea? It will help break down your dry amendments a bit quicker.
 

PadawanWarrior

Well-Known Member
Ah welcome to organics, it's a blast. One thing that took me a while to understand at first is a top dress takes 3-4 weeks to break down. I have fish emulsion and kelp on hand if I need to fix N or K deficiency immediately.

Have you heard of compost tea? It will help break down your dry amendments a bit quicker.
It doesn't necessarily take 3-4 weeks. It depends how active the biology of the soil is and the amendments added. But you're right, it takes a bit to break down depending.

I actually mix my top dressing mixes and cook it for a week or so first now. Works great. It's usable faster and isn't gonna be hot and cook the roots that way.

Compost tea will help too, but I haven't made a tea in a long time. I'm too lazy anymore.

And emulsion reeks. I use hydrolysate instead, but only very rarely. I usually just give plain water.
 

lazypothead420

Well-Known Member
Ah welcome to organics, it's a blast. One thing that took me a while to understand at first is a top dress takes 3-4 weeks to break down. I have fish emulsion and kelp on hand if I need to fix N or K deficiency immediately.

Have you heard of compost tea? It will help break down your dry amendments a bit quicker.
Lmao yeah I can see that! I've always used bottled nutes and never really had any issues so this got me a lil panicked. How long should I wait and see if it helps before I give em some more Neptune's? Go easy with half strength or just hit em with the full recommended dose? I was looking into some tea's recently but I don't want to complicate things even more. I read sometimes using a bunch or teas can cause problems. Guess i'm trying to find a simple but effective technique. If there is one lol.
 

sirtalis

Well-Known Member
Well
I read sometimes using a bunch or teas can cause problems.
There's a bit of misconception on the forums about teas.

There's 2 categories:
1. Teas as fertilizer
2. Teas purely for microbiome

I pretty much never do #1. I'm essentially giving my plants 0-0-0 so that the microbes can break down whatever amendments I have either on top of or inside of my soil.
 

PadawanWarrior

Well-Known Member
Lmao yeah I can see that! I've always used bottled nutes and never really had any issues so this got me a lil panicked. How long should I wait and see if it helps before I give em some more Neptune's? Go easy with half strength or just hit em with the full recommended dose? I was looking into some tea's recently but I don't want to complicate things even more. I read sometimes using a bunch or teas can cause problems. Guess i'm trying to find a simple but effective technique. If there is one lol.
The top dressing might be the issue here. Just a thought.

And Neptune's Harvest is pretty mild.

I still think it's the top dressing causing lockout or burning. The soil can get hot and literally burn the roots. That's partly why I do the precook shit anymore.
 

sirtalis

Well-Known Member
It doesn't necessarily take 3-4 weeks. It depends how active the biology of the soil is and the amendments added. But you're right, it takes a bit to break down depending.

I actually mix my top dressing mixes and cook it for a week or so first now. Works great. It's usable faster and isn't gonna be hot and cook the roots that way.

Compost tea will help too, but I haven't made a tea in a long time. I'm too lazy anymore.

And emulsion reeks. I use hydrolysate instead, but only very rarely. I usually just give plain water.
Yea 3-4 weeks wasn't meant to be a blanket statement, but I usually topdress with that timeline in mind. For veg I aim for a 5-1-3 ratio with micros covered already in the soil mix.

Emulsion does smell like ass. I def wouldn't use it indoors, but outside it's amazing :D
 

lazypothead420

Well-Known Member
The top dressing might be the issue here. Just a thought.

And Neptune's Harvest is pretty mild.

I still think it's the top dressing causing lockout or burning. The soil can get hot and literally burn the roots. That's partly why I do the precook shit anymore.
Funny you say that.. this did start happening a day or 2 after I topdressed. I topdressed 2 tbsp per gal but I didn't compensate for the empty inch or so in the pot so it was a little hotter then I originally planned.
 

PadawanWarrior

Well-Known Member
Pandawan how do you cook your topdress?
I mix compost, EWC, pumice, and whatever dry amendments I want into a container. Keep it moist, but still allow it to breath. Mix it up regularly. Let it sit for a week or so, and then top dress with it when it's not hot. The shit literally gets hotter than my hot tub. It also depends what you add. Some shit is hotter than others. You can throw some rice hulls or peat moss in to, but I never do. I have a mulch layer of rice hulls on top of my soil.

I've made a lot of posts about it. You should just search top dress, with my ID and you'll see a bunch of posts I just did one a day or so ago that I took a picture of some that was still waiting to get top dressed.

Here's one of the threads I responded to.
https://www.rollitup.org/t/organic-grow-ph-problems-calcium-deficiency.1047603/post-16192811
 

lazypothead420

Well-Known Member
Well


There's a bit of misconception on the forums about teas.

There's 2 categories:
1. Teas as fertilizer
2. Teas purely for microbiome

I pretty much never do #1. I'm essentially giving my plants 0-0-0 so that the microbes can break down whatever amendments I have either on top of or inside of my soil.
Mind sharing the recipe?
 
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