Jack's 12-4-16 RO

calvin.m16

calvin.m16

Well-Known Member
Anyone had issues measuring nutrient dosage by just blending then reading EC vs weighing grams of powder out?
 
Wastei said:
It depends on the volume. Smaller volumes I eyeball buts it's a hassle to dilute larger volumes if you're just a little bit off.
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I always leave some room for water so if it's off I can dilute it. Do you mean it'd be off some other way? I'm happy so far with results, without any pH adjustment in pure RO the formula mixed up to 5.5 pH @ 1.5 EC quite impressive.
 
calvin.m16 said:
I always leave some room for water so if it's off I can dilute it. Do you mean it'd be off some other way? I'm happy so far with results, without any pH adjustment in pure RO the formula mixed up to 5.5 pH @ 1.5 EC quite impressive.
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No I was just thinking about it being harder to dilute larger volumes. It's nice when the water source match the nutrients being used. I have really hard water where I'm at but it's optimal since I'm started growing in coir again.

I just mix to 1.2 EC with 0.3 EC base and pH always lands on 6.0-6.1, MC one part.
 
Wastei said:
No I was just thinking about it being harder to dilute larger volumes. It's nice when the water source match the nutrients being used. I have really hard water where I'm at but it's optimal since I'm started growing in coir again.

I just mix to 1.2 EC with 0.3 EC base and pH always lands on 6.0-6.1, MC one part.
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I'm doing my best to pry my fingers off the bottles so hopefully it works out. Thanks! I gotta use RO my well water is trash and the softened water contains too much sodium.
 
I've been gettin' pretty handy with the maxi scoop and a 5 gallon bucket with a 20 ml syringe and pH up. By the end of the run, I suck at eyeballing for seed-starting though and have to relearn muscle memory.

I tried weighing, but that the numbers changed too frequently to get a solid system in place for me.
 
blueberrymilkshake said:
I've been gettin' pretty handy with the maxi scoop and a 5 gallon bucket with a 20 ml syringe and pH up. By the end of the run, I suck at eyeballing for seed-starting though and have to relearn muscle memory.

I tried weighing, but that the numbers changed too frequently to get a solid system in place for me.
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So would you agree with mixing one part solutions to desired EC vs weighing grams then mixing and hoping EC hits? It seems simple but I'm not sure if its that simple. lol

Jacks is definitely strong on N my clones that are 2 ft tall show some nutrient burn on lower leaves from 1.4 EC where the plants under my growers choice 720 LED that are like 4 ft tall are looking green. Definitely their RO formula seems hot on nitrogen so I'm going to make sure to keep EC in check. Crazy how dark green that stuff makes it even at only 1.4 EC...
IMG_6836.jpeg
 
I do all the mixing with a cheap TDS meter.

Only deal with the balls and cancerous powder once in awhile, when mixing a concentrated batch.

First I mix up a gallon jug of part A and a gallon jug of part B. I just put the same amount of scoops for each part every time.. for ease of use, and ability to measure by volumes at some point if I wanted.

The water I use is constantly 32 PPM, so I don't really factor it in.

I do factor in the Espoms salts, but hardly ever need to use it. When i do, I use like 50 PPM worth, on top of the mix.


Now, if I wanted a target solution of 600 PPM, I would first mix the part A by pouring in some of the concentrate, and stirring it up.

Then, keep checking my meter until it hits roughly 360 PPM. After making sure its blended well, I just top up with the calcium nitrate part B concentrate until it hits my 600 mark. That would be 240 PPM worth of calnit.



The basic 3-2 ratios I use would look something like this, depending on growth stages, etc:

Target PPM=====Part A==========Part B
---------------------------------------------------
350===========235===========115
---------------------------------------------------
400===========260===========140
---------------------------------------------------
500===========300===========200
---------------------------------------------------
600===========360===========240
---------------------------------------------------
700===========400===========300
---------------------------------------------------
750=========== 430===========320
 
Drop That Sound said:
I do all the mixing with a cheap TDS meter.

Only deal with the balls and cancerous powder once in awhile, when mixing a concentrated batch.

First I mix up a gallon jug of part A and a gallon jug of part B. I just put the same amount of scoops for each part every time.. for ease of use, and ability to measure by volumes at some point if I wanted.

The water I use is constantly 32 PPM, so I don't really factor it in.

I do factor in the Espoms salts, but hardly ever need to use it. When i do, I use like 50 PPM worth, on top of the mix.


Now, if I wanted a target solution of 600 PPM, I would first mix the part A by pouring in some of the concentrate, and stirring it up.

Then, keep checking my meter until it hits roughly 360 PPM. After making sure its blended well, I just top up with the calcium nitrate part B concentrate until it hits my 600 mark. That would be 240 PPM worth of calnit.



The basic 3-2 ratios I use would look something like this, depending on growth stages, etc:

Target PPM=====Part A==========Part B
---------------------------------------------------
350===========235===========115
---------------------------------------------------
400===========260===========140
---------------------------------------------------
500===========300===========200
---------------------------------------------------
600===========360===========240
---------------------------------------------------
700===========400===========300
---------------------------------------------------
750=========== 430===========320
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I have 1 part RO 14-4-16 so you're suggesting create a stock concentrate and feed with that to desired EC? Do you mean 600 PPM x700 scale? So 0.8 EC? That sounds really low to me?
 
I just weigh out powder once I'm certain of the EC it produces in whatever volume of solution I'm mixing up. You can double check it a few times just to be sure, but it won't change in the short term. The only reason it would change is if the powder is exposed to moisture, which would throw off your weights, so I keep it packed tight with dessicant packs just to be safe. It's smart to check the EC when you bump up the concentration though, just to be safe.
 
Yep, just make a stock batch, like a gallon at a time. I use 2 part jacks, but I don't see why you can't do the same with their 1 part..

I think my meters are 500 scale. Yes seems low, but thats how I run with RDWC. I end up dialing in the perfect feed amount once I know a strain, and they get exactly what they need, which isn't usually over 700-750 PPM in the flowering stage.
 
Drop That Sound said:
Er.. I would do the same with a one part too, just make a concentrate, and mix by EC..
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That settles it lol. The reps have recommended 100 times concentration for stock solution. I plan to use leftover 5 liter jugs to mix it up in. I know that Epsom needs to be separate from the 1 part RO formula. It'd be a lot safer dealing with a stock concentrate vs dealing with powder every day.
 
Drop That Sound said:
Yep, just make a stock batch, like a gallon at a time. I use 2 part jacks, but I don't see why you can't do the same with their 1 part..

I think my meters are 500 scale. Yes seems low, but thats how I run with RDWC. I end up dialing in the perfect feed amount once I know a strain, and they get exactly what they need, which isn't usually over 700-750 PPM in the flowering stage.
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I go through 30-50 gallons of solution a day between clone, veg & bloom so I think 4-5 liter jug of stock would be handy, probably have to mix a fresh batch every couple weeks but that's a okay with me!
 
Jack's recommends 1.4 lbs per/gal of water for stock concentrate with their 12-4-16 1 part formula so I'll mix that up and splash it in there and stir until it hits target. I know some anti chem farmers have said its made from bomb materials well this shits bombbbb pun intended. Smells like some shit you'd use in your pool water.
 
Next thing you know, your looking up nutrient dosing pumps, automated reservoirs, and tickets to the Bahamas for a week.. lol

I haven't quite gotten that far yet... I do enjoy using my own mixed up bottles of nutes though, without digging into the bags all the time.
 
Drop That Sound said:
Next thing you know, your looking up nutrient dosing pumps, automated reservoirs, and tickets to the Bahamas for a week.. lol

I haven't quite gotten that far yet... I do enjoy using my own mixed up bottles of nutes though, without digging into the bags all the time.
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Dude you aren't kidding I'm getting tired of watering by hand every day and manually removing runoff.. I wanna just get a 1:100 doser, fill my rows with thebucketcompany or similar system and let it rip!

it'd be nice to get even 1 day off the grow which hasn't happened in 3 years now. It's my hobby, passion and duty at this point as a caregiver for multiple people.
 
calvin.m16 said:
Dude you aren't kidding I'm getting tired of watering by hand every day and manually removing runoff.. I wanna just get a 1:100 doser, fill my rows with thebucketcompany or similar system and let it rip!

it'd be nice to get even 1 day off the grow which hasn't happened in 3 years now. It's my hobby, passion and duty at this point as a caregiver for multiple people.
Click to expand...

You aint joking. ive been back at it for about 6 months. Work and Home. Jumped right in when I moved from an anti cannabis state to a pro cannabis state. I work 6-7 days a week, usually 7 now that we have a flowering room running as well as the veg. Then home to deal with my home garden. I love it, but The Grind does wear on you.
 
Okay so Jacks isn't for me, pH in the coco at the roots has been crashing down to the 4s with potassium silicate. back to cyco D:
 
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