Jack's City Limits Formula with my Well water Analysis

This writeup explains silica and how to mix properly. Directly related to PH during mixing process.

TintEastwood said:

This writeup explains silica and how to mix properly. Directly related to PH during mixing process.

Silica In Hydroponics | Manic Botanix

Silica and Hydroponics For myself, I do not see silica as a beneficial additive but, more so, as a must (an essential element) in any balanced/optimized nutrient regime. Silica (Si) is the second most…

medteknutrients.com.au

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have to break out my nute calc and see what 1mL of Armor Si breaks down to Si and K. this 15-5-20 already has plenty of K so i don' want to go overboard.

thanks!
i've tried it with and w/o the Si and it still drops into the low 4's.

i'll post up what the reply from JRpeters is.

I hope this message finds you well and you are staying healthy. Thanks for reaching out!

It sounds like you have been in touch with Cody and I understand you are having some trouble with your pH crashing - let's see what we can do about that!

Thanks for sharing your water sample results. You mentioned that you are using Jack's 15-5-20 - are you using this formula for veg and flower? Are you using 10-30-20 bloom as well? If so, does the pH drop coincide with the use of 10-30-20?

Let us know when you have a chance! Thanks again for reaching out!

rkymtnman said:

have to break out my nute calc and see what 1mL of Armor Si breaks down to Si and K. this 15-5-20 already has plenty of K so i don' want to go overboard.

thanks!
i've tried it with and w/o the Si and it still drops into the low 4's.

i'll post up what the reply from JRpeters is.

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I doubt silica is causing your ph drop issue.

Hopefully the JR folks are of help.

My only thoughts..
I might test...
Mixing in a different res
and/or
Start with RO water.

TintEastwood said:

Start with RO water.

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i'm not gonna do the RO thing. i did that for years hauling water from Safeway. other nutes have been stable with my well and my res set-up.

response #2:
Thanks for the detailed response – this is interesting – I would not expect such a sharp decrease in pH so quickly.

A couple of questions:

1. Has this occurred in the past or is this your first grow with the Jack’s 15-5-20?
2. Are you solely using Jack’s 15-5-20 or are you using any other Jack’s products? Some growers use our Jack’s 10-30-20 during the first 1-2 weeks of flower – 10-30-20 is a potentially acidic fertilizer formula so this can sometimes cause pH to drop, but it does not sound like you are using this product?
3. You said you are using a drain to waste system – does this mean that the nutrient solution in the reservoir is always fresh nutrient solution?

Let me know when you have a chance – looking forward to figuring out what is going on here!

Well, after a bunch of back and forth emails , Dan at JR Peters is stumped as to why the pH drops so much. He recommend the 12-4-16 which he said was "more potentially basic" than the Tap formula.

as a follow up to our last email, they are sending me a bag of 12/4/16 to try out. it's the RO formula vs their Tap formula.

rkymtnman said:

as a follow up to our last email, they are sending me a bag of 12/4/16 to try out. it's the RO formula vs their Tap formula.

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Awesome to hear they are doing what they can.

I found this informative.

The more I have learned about nutes, the more I appreciate and prefer the 2 or 3 part .vs. 1 part. Just saying not trying to steer your grow.

TintEastwood said:

Awesome to hear they are doing what they can.

I found this informative.

Using Jack's Nutrients with RO Water

So you're using RO water. You've got a couple options when it comes to selecting the right Jack's Nutrients for you.

www.jacksnutrients.com

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i'm very happy with their customer service.

so @TintEastwood and @J232 if this 12/4/16 is more pH stable, thoughts about using it as a start to finish nute? i was gonna try it from start to finish (Tap formula) but can't do it with this pH issue.

rkymtnman said:

i'm very happy with their customer service.

so @TintEastwood and @J232 if this 12/4/16 is more pH stable, thoughts about using it as a start to finish nute? i was gonna try it from start to finish (Tap formula) but can't do it with this pH issue.

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I need/want to have this type of flexibility...



A natural fit for 2 or 3 part nutes. Megacrop 2part feed schedule as an example. (Virtually same formula as Jacks 321)


I know its more of a PIA with multiple parts to mix. Pros and cons.

TintEastwood said:

I need/want to have this type of flexibility...

View attachment 4713223

A natural fit for 2 or 3 part nutes. Megacrop 2part feed schedule as an example. (Virtually same formula as Jacks 321)
View attachment 4713226

I know its more of a PIA with multiple parts to mix. Pros and cons.

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so with the cal nit, it's basically 20/12/26 formula? i see that as a great veg nute but how does it do so well in bloom?

i'm using GH floranova bloom now and it's 4/8/7.

my grow setup isnt' changing at all so all im messing with is nutes.

I'm still learning by doing.
Changing NPK ratios and other elemements specific to my coco environment.

Some run nutes with the same recipe from veg to harvest with great success.

Here's the breakdown of the MC feed recipes.

TintEastwood said:

I'm still learning by doing

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me too. and it's hard when every grow i do is a new strain

rkymtnman said:

me too. and it's hard when every grow i do is a new strain

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Agreed. A first for me....growing 8 different strains this run!

rkymtnman said:

i'm not gonna do the RO thing. i did that for years hauling water from Safeway. other nutes have been stable with my well and my res set-up.

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Oh man, I don’t miss the water hauling!

rkymtnman said:

i'm very happy with their customer service.

so @TintEastwood and @J232 if this 12/4/16 is more pH stable, thoughts about using it as a start to finish nute? i was gonna try it from start to finish (Tap formula) but can't do it with this pH issue.

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i will have to dig out my old note pads and look at what I have tried in the past before I went Lucas this past time. I have never had luck with my tap water, 260-300 at its best, stinks like chlorine, comes from deep wells on the north sask river. You guys are lucky out there, we get the same water but look how many people shit in it before it gets out here haha. The micro hard water failed me within days and I went right back to RO, will be interested to see if the ph holds. I haven’t read up on this formula they are sending out but will take a better look in a few here. What was your tap water again, 160? Or am I thinking someone else.

J232 said:

What was your tap water again, 160

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pretty close to 0.2EC

hows your run going with jacks tap?

Im running jacks 321 with my tap (.3-.4ec) but running into problems since flipping.

im considering trying jacks tap instead of going back to dynagro

newbplantgrower420 said:

hows your run going with jacks tap?

Im running jacks 321 with my tap (.3-.4ec) but running into problems since flipping.

im considering trying jacks tap instead of going back to dynagro

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I use Jacks. Are you in coco?
What kind of problems?

TintEastwood said:

I use Jacks. Are you in coco?

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ebb and flow. rockwool. im having some leaf chlorosis and purple stems. i know its a magnesium problem. i just dont know if im locking it out by feeding jacks full strength 3.6/2.4/1.2 or if i need to bump up the ec from 2.4 (jacks 2.0 +.4 tap water ec) to maybe under ~3ec.

theyre under leds... idk if they demand more mg under them... its my first full run in bloom with them.