Jack's nutes issues.

Throttlebuzz

Active Member
I switched over to jacks this cycle. I was having calcium problems due to the water being filtered. So I've been fucking with the formula and all getting it dialed in. I'm ten days into flower. RDWC. 1000W LED. What is going on with my new growth yellowing and kinda wrinkled. Been a bitch of a grow so far. 4 plants. 3 girlscout cookies, 1 five star. I appreciate the suggestions
 

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Throttlebuzz

Active Member
5x5 tent. EC last time with calmag was 1000. I have 30gal ran it at 105g 60g 30g, calmag at 4ml per gal. Silica 2ml.
 

Throttlebuzz

Active Member
I'm worried about how much K is in it really, but nobody else seems to be having any issues. I have ran it at 3.6 2.4 1.2 and noticed calcium brown/copper blotches. Fixed them and started getting the yellow striped affext that greatly resembled zinc issues. Foliar sprayed it with calmag and it fixed it. Now I'm having yellowing again but less of the striping. Oh, i forgot to mention that the calmag I'm using comes with all micros as well. More than deffeciency I'm worried about it being an abundance of something blocking out something. I just ran water though it for a day to flush it before this last batch of nutes so roots should have been fresh
 

Major Blazer

Well-Known Member
What's the pH? Looks like maybe zinc deficiency. I don't have personal experience here but judging by similar photos. How are your environmentals?
 

Throttlebuzz

Active Member
What's the pH? Looks like maybe zinc deficiency. I don't have personal experience here but judging by similar photos. How are your environmentals?
I keep thinking it's zinc also. But why? Jacks has micros and calmag does also. Ph rolls around from 5.8 up to 6.4 then i lower it back. Not sure why ph keeps climbing continuously. Humidity is high but i can't do much about it. Temp is low 80s upper 70s. Plenty of air as it has 2 6in fans. 1 in 1 out.
 

Major Blazer

Well-Known Member
I would flush and also not use the calmag (in general). Silica buffers the pH too so maybe hold off this feed and see how goes. You shouldn't be fighting pH drifts like that so my guess is that it's a zinc deficiency since zinc availability reduces at higher pH's.
pH-availability-chart.jpg
 

Wastei

Well-Known Member
Overfed and early signs of light bleaching.
You only need the base.

I don't understand the reason to use calmag when you have almost 25% Ca in the feed with standard Jack321 ratio.

You only fuck up the nutrient ratios by adding thing not needed on top of a already complete plant food.
 
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Throttlebuzz

Active Member
I would flush and also not use the calmag (in general). Silica buffers the pH too so maybe hold off this feed and see how goes. You shouldn't be fighting pH drifts like that so my guess is that it's a zinc deficiency since zinc availability reduces at higher pH's.
View attachment 4954708
I was thinking zinc. I am guilty of not dropping ph down this round and have been maintaining it from 6.0 up. I will take her down to 5.7 and let it climb. Yeah the ph thing is daily lowering and i don't remember having this issue with GH once ph settled. I have no air lines so i can't figure out why. I just saw a chelated calcium product i might use to supplement instead of calmag. I dont like raising yhe CaN because of the amount of N in it. I just started filling the barrel for my weekly flush and am going to go with 321 even. I already know i need more ca due to filtered water and even at the tap is only 68ppm according to the wayer co.
 

Throttlebuzz

Active Member
Overfed and early signs of light bleaching.
You only need the base.

I don't understand the reason to use calmag when you have almost 25% Ca in the feed with standard Jack321 ratio.

You only fuck up the nutrient ratios by adding thing not needed on top of a already complete plant food.
I was having calcium problems in the beginning because of filtered water not having any in it. That problem went away with the introduction of this one
 

PeatPhreak

Well-Known Member
5x5 tent. EC last time with calmag was 1000. I have 30gal ran it at 105g 60g 30g, calmag at 4ml per gal. Silica 2ml.
Underfeeding in general. This is only 500ppm. I use about 1200ppm at your stage with Jacks. Full strength at peak is 2000ppm. Lights are 400 real watts. 800-900ppfd. Media is peat, not hydro. Not exactly the same, but similar.

Omit CalMag and just increase everything else. You shouldn't need CalMag if you are using Epsom with Jacks. However, you may need a little more Calcium. If so, add 1g/gal of gypsum.
 

Wastei

Well-Known Member
Underfeeding in general. This is only 500ppm. I use about 1200ppm at your stage with Jacks. Full strength at peak is 2000ppm. Lights are 400 real watts. 800-900ppfd. Media is peat, not hydro. Not exactly the same, but similar.

Omit CalMag and just increase everything else. You shouldn't need CalMag if you are using Epsom with Jacks. However, you may need a little more Calcium. If so, add 1g/gal of gypsum.
I would not listen to this advice. I've been growing with Jack's in DWC and never gone over 600ppm(1.2 EC).

2000ppm is just plain ridiculous, that's 4.0 EC (holy mackerel!) and a terrible advice. Plants and humans don't like to be force fed.

If you're in container I understand the reasoning to add calcium sulfate as "calmag" to up pH in the middle stages of growth. You seem very new to this and think in terms of more nutrients is better which could not be further from the truth.
 
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PeatPhreak

Well-Known Member
I would not listen to this advice. I've been growing with Jack's in DWC and never gone over 600ppm(1.2 EC).

2000ppm is just plain ridiculous, that's 4.0 EC (holy mackerel!) and a terrible advice. Plants and humans don't like to be force feed.

If you're in container I understand the reasoning to add calcium sulfate as "calmag" to up pH in the middle stages of growth. You seem very new to this and think in terms of more nutrients is better which could not be further from the truth.
Not new. Been growing for a long time. But as I said, I don't do hydro. 2000ppm produces a large yield of mostly flawless plants for me in PEAT and I wasn't suggesting he should use 2000ppm in hydro. I just suggested he use more nutes, which you indirectly agreed with by saying you use 600ppm.

I don't have any nutrient issues, know exactly what I'm adding and why. So don't make any more false assumptions about me or why I use gypsum.
 

Throttlebuzz

Active Member
Underfeeding in general. This is only 500ppm. I use about 1200ppm at your stage with Jacks. Full strength at peak is 2000ppm. Lights are 400 real watts. 800-900ppfd. Media is peat, not hydro. Not exactly the same, but similar.

Omit CalMag and just increase everything else. You shouldn't need CalMag if you are using Epsom with Jacks. However, you may need a little more Calcium. If so, add 1g/gal of gypsum.
there ya go.. gypsum. i didnt want to add anymore calnitrate... so i was using the calmag for it not the mag. I need something to beef up the calcium. will gypsum work in hydro? i dunno. i saw some chelated calcium that wasnt too much i am going to get. so i can mix normal and add calcium by itself
 

Throttlebuzz

Active Member
I would not listen to this advice. I've been growing with Jack's in DWC and never gone over 600ppm(1.2 EC).

2000ppm is just plain ridiculous, that's 4.0 EC (holy mackerel!) and a terrible advice. Plants and humans don't like to be force feed.

If you're in container I understand the reasoning to add calcium sulfate as "calmag" to up pH in the middle stages of growth. You seem very new to this and think in terms of more nutrients is better which could not be further from the truth.
how can i get the calcium level higher without using the calcium nitrate nor calmag? i just need to do that and I think i will be good. well I still have the yellowing new growth but i think a lower ph is going to fix that
 

PeatPhreak

Well-Known Member
how can i get the calcium level higher without using the calcium nitrate nor calmag? i just need to do that and I think i will be good. well I still have the yellowing new growth but i think a lower ph is going to fix that
With powdered gypsum. It's soluble and works fine. Doesn't settle out. Do not use chelated calcium in the feed routinely. It's better utilized as a foliar treatment all by itself or a limited use root feed.
 
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