Jacks Professional

JR Peters Inc, more specifically Jacks Professional, is probably my favorite synthetic nutrient company and its for one very simple reason: Price. Nothing beats the price of Jacks Professional and quality is like it says, professional grade. They are a powder-only company that has over 60 different mixes, none custom made for marijuana, but many are just as good as 'plant specific' nutrients. Below is a list of products in the Jacks Professional line that have potential use for marijuana growing.


(N-P-K) [Ratio Simplified] {% Nitrogen in Nitrate form}
*= Personal Favorites

Jacks Pro Hydroponic (5-12-26) [1-2.5-5] {100%}*
http://www.jrpeters.com/Products/Jac...ydroponic.html
{to be used in conjunction with Calcium Nitrate a.k.a. Calcinit}

Jacks Pro Blossom Booster (10-30-20) [1-3-2] {50%}
http://www.jrpeters.com/Products/Jac...m-Booster.html
{more Mg than Jacks Classic Blossom Booster}

Jacks Pro Tropical Foliage (24-8-16) [3-1-2] {35%}
http://www.jrpeters.com/Products/Jac...l-Foliage.html

Jacks Pro Peat-Lite (15-11-29) [3-2-6] {72%}
http://www.jrpeters.com/Products/Jac...Peat-Lite.html

Jacks Pro Pot Mum Finisher (15-10-30) [3-2-6] {53%}
http://www.jrpeters.com/Products/Jac...-Finisher.html

Jacks Pro Orchid RO-Type Water (12-3-15) [4-1-5] {97%}*
http://www.jrpeters.com/Products/Jac...ype-Water.html

Jacks Pro Orchid Well Water (16-4-20) [4-1-5] {76%}*
http://www.jrpeters.com/Products/Jac...ell-Water.html

Jacks Special Finisher (17-5-26) [3.5-1-5] {60%}
http://www.jrpeters.com/Products/Jac...-Finisher.html

Jacks Pro Low Acid Peat-Lite (17-5-24) [3.5-1-5] {69%}
http://www.jrpeters.com/Products/Jac...Peat-Lite.html

Jacks Poinsettia FEed + Mg (17-5-19) [3.5-1-4] {63%}
http://www.jrpeters.com/Products/Jac...-FeED--Mg.html

Jacks Poinsettia FEed + CaMg (15-4-15) [3.5-1-3.5] {81%}*
http://www.jrpeters.com/Products/Jac...ED--Ca-Mg.html

Jacks Pure Water LX (17-4-17) [4-1-4] {78%}*
http://www.jrpeters.com/Products/Jac...-Water-LX.html

Jacks Hydro Herb FEed (16-4-17) [4-1-4] {76%}*
http://www.jrpeters.com/Products/Jac...Herb-FeED.html

Jacks All Purpose LX (21-5-20) [4-1-4] {62%}
http://www.jrpeters.com/Products/Jac...urpose-LX.html

Jacks Mum FEed (22-5-16) [4.5-1-3] {57%}
http://www.jrpeters.com/Products/Jac.../Mum-FeED.html

Jacks Pro High Performance (25-5-15) [5-1-3] {57%}
http://www.jrpeters.com/Products/Jac...rformance.html

Jacks Pro General Purpose (20-10-20) [2-1-2] {60%}
http://www.jrpeters.com/Products/Jac...l-Purpose.html

Jacks Pro Poinsettia Finisher (15-20-25) [3-4-5] {63%}
http://www.jrpeters.com/Products/Jac...-Finisher.html


Two things to keep in mind: Some of Jacks mix's can have large amounts of Nitrogen in the form of Urea or Ammoniacal Nitrogen, where Marijuana tends to like most Nitrogen in the form of Nitrate Nitrogen, and most of Jacks products are formulated for soil application so some products can have insufficient amounts of secondary nutrients (Ca, Mg, S) so some Epsom Salts (Magnesium Sulfate) or Cal-Mag might be necessary for a better nutrient profile.



LETS THROW AROUND SOME NUMBERS TO SHOW THE TRUE VALUE OF JACKS PROFESSIONAL



MaxiBloom is considered by many growers to be one of the cheapest nutrient options available. But is this true? Lets compare MaxiBloom to Jacks Professional to find out. We'll make the MaxiBloom purchase as cheap as possible for the comparison, just for kicks.

When buying 50lbs of MaxiBloom (bulk is cheapest) online you should be able to get around the price of $250 (shipping and handling included) or ~$5.00 a lb of MaxiBloom

When buying Jacks Professional online (lets go bulk as well), practically ANY product can be purchased in the 25lb size for ~$50 varying on where you live ($29 + Shipping on average) or ~$2.00 a lb of Jacks Professional when only having to buy 50% of the amount and pay 20% of the price to get "bulk value" as compared to MaxiBloom

50lbs MaxiBloom = ~$250 (250% of the price of Jacks Professional)
50lbs Jacks Professional= ~$100 (40% of the price of MaxiBloom, or for you on-sale shoppers, 60% off!)

To further the comparison let's say to make those 50lbs of Jacks Professional we bought 25 lbs of Jacks Pro Hydro 5-12-26 and 25lbs of Jacks Pro Blossom Booster 10-30-20. When the 2 said products are mixed 50/50 their N-P-K-Mg-S copies MaxiBloom almost exactly, although the Jacks mix is about 50% stronger and missing Calcium. Use Calcium Nitrate [Calcinit] or Calcium Carbonate [CALiMAGic] depending on desired N levels and hardness of water. trust me, even when buying that extra product you're saving lots of money, let me prove it to you.

(N-P-K-Mg-S)
Jacks Professional Hydro is 5.0-12-26-6.3-8.2
Jacks Pro Blossom booster is 10-30-20-2.0-0.0
mixed at a 50/50 ratio gives you 7.5-21-23-4.1-4.1.

simplify that by 33.3% and you get
5.0-14-15-2.8-2.8 (50/50 Jacks Mix)
as compared to
5.0-15-14-3.5-4.0 (MaxiBloom)

And its only 26.6% the price when increased concentration is taken into account!!! again for any on-sale shoppers, 73.3% off!

O.K. so its got a little less Magnesium Sulfate in the mix... if only we knew what magnesium sulfate is and where to get it.... o wait.
Mixing is slightly more complicated than mixing just 7g/Gallon of MaxiBloom, slightly, and only as difficult to mix as any 2 part nutrient. Add you source of calcium as suggested above and some magnesium sulfate as desired and you got yourself MaxiBloom at lets say 33% the price that has significantly more flexibility (especially if you decide to get Calcium Nitrate and use with Jacks Hydro 5-12-26)

Now why couldn't you have done this from the beginning? Much better bro
evl

The original Jacks Professional thread has been closed for inappropriate titling and behavior.

http://www.jrpeters.com/Products/Hydroponics/Buy-Hydroponics.html

I've seen some real nice grows with 3 grams per gallon of the Jacks hydro and 2 grams per gallon of the cal nitrate.

I've used this cal nitrate before and is real good for the price.
http://www.cropking.com/HydroponicS...d=1105&zenid=acffe91946536ee7bf415e8a72df5173

I'm going to try with my current strain to see if 7 grams of the Jacks hydro in your typical 5 gallon dwc (3-3.5 gl of nutes) will be strong enough plus the calnitrate.

If 7 grams is enough I should get 1600 nute changes or 1 every week for 30 years out of a 25lb bag of the Jacks hydro.

At 3 grams and 2 grams what were they growing in? Soil, hydro or coco.

This is what I am using atm. I'm almost out of ProTekt at which point I will switch to AgSil16. That will drop the price to $0.80 for a 24 gallon res.

Ichabod Crane said:

At 3 grams and 2 grams what were they growing in? Soil, hydro or coco.

Click to expand...

I've seen pics of people using it for hydro and coco and I bet it would be fine for soil, is it ok to post links to other grow sites? There's some good info on Jacks Hydroponic out there that I could post the links to.

Wisco is that in coco?

I don't think you can post links, but I'm not sure.

I ditched MaxiBloom last run, I couldn't take it any more. All the fucking shaking & shaking & still having white stuff floating around the bottom, I just couldn't deal with it as I am often in a rush to water at lights on & then gtfo of dodge.

I switched to Jacks blossom booster 10/30/20 & haven't looked back, it dissolves INSTANTLY in water at ambient temps, only problem is the lack of calcium, so I give 'em some cal-mag every now & again.

The tub came with a little sales pitch brochure, it said something along the lines "watch how instantly it dissolves, that's how you know it's a quality fertilizer". I tend to agree, and the plants do as well.......

Currently running ecsd, chem-4, chem-d, and cheezle, all on the same regiment. I am pretty close to finishing and have had ZERO run-off this grow. Promix HP, I PH everything to 5.8, my tap is 90 ppm's 8.5ph & is said to contain lots of calcium even though it is very soft water.... Currently giving them around 1,500 ppm's avery 3rd watering, allthough I frequently adjust based on how much the plants are drinking, ie sometimes I will give a lighter feed every other other watering. Allthough on my new Vert room I have decided to give 500 ppm's every watering instead, it negates the need for PH adjusting, we'll see how it goes...... But anyways:

Fuck Maxibloom!

Im wondering whats difference between JC's 20-20-20 and JC's 5-12-26 ? 20-20-20 is consider perfect ratio for veg stage. I just never try em out before but im extremely intrested in JCs ferts and will buy em real soon for my next grow. Thanks

Happy growing and peace

666

thanks to the op for the links and to the last poster for bumping.

i have been using jacks pro hydro + calcium nitrate, blossom booster for a year and been satisfied.

price can't be beat as well

edit: also note the jacks pro hydro supplies magnesium and sulfur with 100% nitrate nitrogen

also:

For best results use warm or hot water (180 F) to dissolve product. Some raw materials are slower to dissolve than others. Most fertilizer compounds dissolve in an endothermic reaction which means they absorb heat from their surroundings during the process. In strong conentrations or stock solutions (1-3+ lbs per gallon) using cold water in a cold environment will drastically slow the dissolving process ( up to 24 hours to form a true solution). In all conditions, agitation will help speed up the dissolving process by exposing more particle surface area to the water.

Still liking the Jacks Hydro mix?

Izoc666 said:

Im wondering whats difference between JC's 20-20-20 and JC's 5-12-26 ? 20-20-20 is consider perfect ratio for veg stage. I just never try em out before but im extremely intrested in JCs ferts and will buy em real soon for my next grow. Thanks

Happy growing and peace

666

Click to expand...

The advantage of the 5-12-26 formula is that you pair it with the cal-nit. This allows you to lower the cal-nit later in flower when the plant doesn't need as much nitrogen. You can then replace it with a P-K booster, or what have you. It's nice to be able to really dial strains in, and this formula allows you to do that.

How much should I lower the cal-nit and when should I look at doing this? I'm currently at week 3 in flower.

StoopheadFred said:

How much should I lower the cal-nit and when should I look at doing this? I'm currently at week 3 in flower.

Click to expand...

After your stretch is over drop the cal nitrate.

StoopheadFred said:

How much should I lower the cal-nit and when should I look at doing this? I'm currently at week 3 in flower.

Click to expand...

What's become apparent to me is that when and if you lower the calnit, you should replace the calcium that's being withheld. You really don't need to lower calnit much, if at all, for most strains.

dramamine said:

What's become apparent to me is that when and if you lower the calnit, you should replace the calcium that's being withheld. You really don't need to lower calnit much, if at all, for most strains.

Click to expand...

I agree. You will need to know what your strain does to tell when to completely end the calcium nitrate. A longer running strain will suffer if you end it to soon.

You can run the jack's and calcium up till the last week if you run a lower EC. Then just flush.

In the end it depends on the strains themselves.

imo this one is the best for mj from begining to end

Jacks Pro Peat-Lite (15-11-29) [3-2-6] {72%}*

joe fresh said:

imo this one is the best for mj from begining to end

Jacks Pro Peat-Lite (15-11-29) [3-2-6] {72%}*

Click to expand...

The NPK ratio is good with that product however the N03:NH4 ratio is off. It contains way to much NH4. I would suggest running some nitrifying bacteria in your mix to help convert the NH4 into N02 which is then converted to usable N03. So that is one thing to think about if you use the 15-11-29 mix.

I think I am going to buy a bag of jacks now. This thread has me convinced. I love maxibloom but it never fully dissolves.