crankdoctor
Active Member
In dwc I can’t get passed 1.2 Ec. Most strains around 1 is the sweet spot.
Switched from Jacks to 321 to Jacks RO 12-4-16 and getting N toxicity
- Thread starter pizzax1
- Start date
Snowback
Well-Known Member
I finally got my Jack's RO.
Some very preliminary observations:
The bad:
- Even though I was careful not to buy a mix that contains ammonium nitrate, this stuff is still hygroscopic. It's not as brutally clumpy as Jack's other formulas that do contain ammonium nitrate, but there is still something in there that is doing it to a lesser extent. Could it be the Ammonium molybdate? It was relatively easy to break up into the consistency of soft brown sugar by crushing the bag in my hands for less than a minute, but it could be an issue if someone were to buy one of the large bags. The date on the bag was 2017, so maybe that's a factor too.
The good:
- It mixes beautifully. Clean and clear, with a slight blue-green tint to the water. Highly soluble. Not even the slightest particles on the bottom of my clear plastic testing jug.
- Consistently mixed, in spite of the hygroscopic issues. Measured 1 gallon test mixes were all equal values for EC.
- Stable. The PH test mix has been tested twice a day for PH stability. It's been exactly the same for 3 days.
- My water is close to a PH of 7. Mixing at slightly stronger than their recommended amount takes it to a PH of around 5.8, which is right where I like to be with my Promix. It's not a big deal, but it's nice not to have to care about it. This mix is potentially basic, which I prefer because I'm big on run-off and it's more easy to acidify the Promix if needed. That's one of the main reasons that I bought this high calcium RO formula to test.
-No dust. The upside of the soft brown sugar texture of this mix is that it produces no readily detectable dust when scooping and mixing.
-------------------
That's about all for now. Time to do a few testers with it and report back in the future.
Some very preliminary observations:
The bad:
- Even though I was careful not to buy a mix that contains ammonium nitrate, this stuff is still hygroscopic. It's not as brutally clumpy as Jack's other formulas that do contain ammonium nitrate, but there is still something in there that is doing it to a lesser extent. Could it be the Ammonium molybdate? It was relatively easy to break up into the consistency of soft brown sugar by crushing the bag in my hands for less than a minute, but it could be an issue if someone were to buy one of the large bags. The date on the bag was 2017, so maybe that's a factor too.
The good:
- It mixes beautifully. Clean and clear, with a slight blue-green tint to the water. Highly soluble. Not even the slightest particles on the bottom of my clear plastic testing jug.
- Consistently mixed, in spite of the hygroscopic issues. Measured 1 gallon test mixes were all equal values for EC.
- Stable. The PH test mix has been tested twice a day for PH stability. It's been exactly the same for 3 days.
- My water is close to a PH of 7. Mixing at slightly stronger than their recommended amount takes it to a PH of around 5.8, which is right where I like to be with my Promix. It's not a big deal, but it's nice not to have to care about it. This mix is potentially basic, which I prefer because I'm big on run-off and it's more easy to acidify the Promix if needed. That's one of the main reasons that I bought this high calcium RO formula to test.
-No dust. The upside of the soft brown sugar texture of this mix is that it produces no readily detectable dust when scooping and mixing.
-------------------
That's about all for now. Time to do a few testers with it and report back in the future.
If you get all the air out of the bag it will store and stay dry. I get the 25lb bag, take a solo cup full of fert and mix with gallon of water for a stock solution. Its easy to mix from the concentrate/stock solution and you dont have to open the bag all the time. If it does absorb water and cake up it really doesnt matter if you make stock solution with it and mix final solution by EC instead of by weight.
Snowback
Well-Known Member
I have some decent air-tight containers, but this stuff was already caked up before the bag was opened for the first time. As per your suggestion, I will definitely at some point make a concentrate, but after I've worked with it for a little while and come to know it better , and that's if I even keep using it. I like to regularly try new ferts.
Through some quick reading, I discovered that it's the magnesium nitrate that is the hygroscopic ingredient in this formula. Not a big deal though. It still breaks up with not too much effort... Not like the rock-hard clumping of ammonium nitrate.
Through some quick reading, I discovered that it's the magnesium nitrate that is the hygroscopic ingredient in this formula. Not a big deal though. It still breaks up with not too much effort... Not like the rock-hard clumping of ammonium nitrate.