As somebody who literally owns both, I can tell you the label says 3% on Peters and 6% on JRPeters. That analysis he posted shows Peters as having 6%, which is absolutely not true.
-
ICMag with help from Landrace Warden and The Vault is running a NEW contest in November! You can check it here. Prizes are seeds & forum premium access. Come join in!
Jacks Professional
- Thread starter dizzlekush
- Start date
As somebody who literally owns both, I can tell you the label says 3% on Peters and 6% on JRPeters. That analysis he posted shows Peters as having 6%, which is absolutely not true.
Overgrowth
Member
WA state department of Agriculture & Peters Professional.
https://agr.wa.gov/PestFert/Fertilizers/FertDB/prodinfo.aspx?pname=6591
https://icl-sf.com/uploads/USA/Prod...s Professional 5-11-26 Hydroponic Special.pdf
your saying there wrong?
https://agr.wa.gov/PestFert/Fertilizers/FertDB/prodinfo.aspx?pname=6591
https://icl-sf.com/uploads/USA/Prod...s Professional 5-11-26 Hydroponic Special.pdf
your saying there wrong?
Which is why I can understand why some people add Epsom salt, it already has a shit ton Mg in it. I think veg bloom clocks in at like 2% Mg.
I've Googled and also found sheets showing 6% Magnesium. They must've updated their recipe so I apologize.
The classic "3-2-1" recipe came from the original Peters 5-11-26 because of the 3% magnesium. That well known recipe has been spread even after JRPeters doubled the magnesium, there are threads around with people suggesting not to use a full gram per the old recipe due to this.
I refer you to this which shows the 3% magnesium (Actually 3.1%, sorry
). They are either still selling the old recipe or they haven't updated their product sheet either: https://www.customhydronutrients.com/51126-hydroponic-special-c-1_43_120_40.html
Overgrowth
Member
I've Googled and also found sheets showing 6% Magnesium. They must've updated their recipe so I apologize.
The classic "3-2-1" recipe came from the original Peters 5-11-26 because of the 3% magnesium. That well known recipe has been spread even after JRPeters doubled the magnesium, there are threads around with people suggesting not to use a full gram per the old recipe due to this.
I refer you to this which shows the 3% magnesium (Actually 3.1%, sorry
https://www.customhydronutrients.com/51126-hydroponic-special-c-1_43_120_40.html
Ymir no need to apologize really
though.I'm very serious about Agriculture and if there was something wrong with a product label i would want to know.
Well that makes sense. I always wondered why people would suggest adding more Mg when it clearly didn't need it.I've Googled and also found sheets showing 6% Magnesium. They must've updated their recipe so I apologize.
The classic "3-2-1" recipe came from the original Peters 5-11-26 because of the 3% magnesium. That well known recipe has been spread even after JRPeters doubled the magnesium, there are threads around with people suggesting not to use a full gram per the old recipe due to this.
I refer you to this which shows the 3% magnesium (Actually 3.1%, sorry
https://www.customhydronutrients.com/51126-hydroponic-special-c-1_43_120_40.html
epicseeds
Member
Hey guys, going to start a person 4x8 test and still have Hydro-Sol 5-11-26, Greenhouse GradeCalcium Nitrate/ and some epsom salt.
I never ran the 3-2-1 ratio I will have to track down my old notes but It was as close as I could get to my favorite user here YosemiteSam.
Speaking of YosemiteSam - does anyone know if he posts anywhere else now?
I never ran the 3-2-1 ratio I will have to track down my old notes but It was as close as I could get to my favorite user here YosemiteSam.
Speaking of YosemiteSam - does anyone know if he posts anywhere else now?
Absolem
Active member
I think this is the thread you are looking for or anyone else looking how to grow correctly and on the cheap in coco coir.
Just follow what YosemiteSam says.
https://www.icmag.com/ic/showthread.php?t=231574&page=4
YosemiteSam laid down some solid advice here. His posts were super informative.
Cheers
Magnesium lockout due to excess K?
Magnesium lockout due to excess K?
Hey y'all, I've been using the Jack's for a few years now and have my first real issue that isn't a quick fix. I'm pretty sure that it's as the header reads, Mag lockout due to excessive K. My "plan" is to drain the res, start fresh.
Any Jacks old hands have better advice?
Thanks y'all.
Magnesium lockout due to excess K?
Hey y'all, I've been using the Jack's for a few years now and have my first real issue that isn't a quick fix. I'm pretty sure that it's as the header reads, Mag lockout due to excessive K. My "plan" is to drain the res, start fresh.
Any Jacks old hands have better advice?
Thanks y'all.
Just started using Jacks 321,
Was wondering if yall aerate your reservoirs with it?
The first week was cool, then I read that jacks recommends aerating. So I put air stones in all my reservoirs.
Next day, ph has jumped up pretty high, and the rez is now cloudy. Maybe Im giving too much?
Any suggestions appreciated...
Was wondering if yall aerate your reservoirs with it?
The first week was cool, then I read that jacks recommends aerating. So I put air stones in all my reservoirs.
Next day, ph has jumped up pretty high, and the rez is now cloudy. Maybe Im giving too much?
Any suggestions appreciated...
@bill farthing you seen or heard of these guys ? Looks like jacks but a tad cheaper?
https://hpnutrients.com/soluble-concentrate/
https://hpnutrients.com/soluble-concentrate/
PurplePotion
Member
Found a couple different formulas for jacks and calnit (+/- epsom and mkp). Would love to hear other users’ opinions. Please correct me if any of the following is wrong.
321- 3 grams Jacks 5-12-26, 2 grams cal nit, 1 gram epsom salt (I believe this is an old formula from a time when jacks 5-12-26 contained less magnesium? Can anyone confirm this?) edit.. seems 3.6-2.4-1.2 is the most common rendition of this.
3:2- same as above without the epsom salt. By weight 1 part jacks 5-12-26 to .67 part calnit. By volume 1:1. I believe this is what is recommended by Jacks at the present time.
Here is the one I’m going to try with RO water (per Ibechillin/eric2028):
Veg & stretch: 3 grams jacks 5-12-26, 3.32 grams calnit
Bloom: 3 grams jacks 5-12-26, 2.5 grams calnit and .5 grams monopotassium phosphate
321- 3 grams Jacks 5-12-26, 2 grams cal nit, 1 gram epsom salt (I believe this is an old formula from a time when jacks 5-12-26 contained less magnesium? Can anyone confirm this?) edit.. seems 3.6-2.4-1.2 is the most common rendition of this.
3:2- same as above without the epsom salt. By weight 1 part jacks 5-12-26 to .67 part calnit. By volume 1:1. I believe this is what is recommended by Jacks at the present time.
Here is the one I’m going to try with RO water (per Ibechillin/eric2028):
Veg & stretch: 3 grams jacks 5-12-26, 3.32 grams calnit
Bloom: 3 grams jacks 5-12-26, 2.5 grams calnit and .5 grams monopotassium phosphate
Last edited:
Wow, I haven't seen these guys before. I usually try to stay on top of that.
Their bases look fabulous for the growers with soft water for the price. For commercial use, JR Peters does consulting and makes blends based on water testing, so I think there is still a huge difference between the two companies. Overall, this is positive and I'm glad to see the market moving away from the hydroponics store mentality.
Biologist
Active member
There's no zinc in their 5-12-26, which is bizarre. Something to watch out for if you try to sub it in directly for Jack's. They are putting the Zn in with the Early Bud 6-30-30 etc.; things you probably don't need in the first place.
Anyone using Jack's finish 7-15-30 in the late flower?
They market it as a low N, late flower formula with zero calcium, but then recommend adding CalNit which sort of negates using a low N formula.
They market it as a low N, late flower formula with zero calcium, but then recommend adding CalNit which sort of negates using a low N formula.
The label is a guaranteed minimum. A lot of times they will omit certain things to prevent reverse engineering. It happens with GH products like MaxiGro. I guarantee you that zinc is in Jacks.
