Ph perfect sensi grow not perfect?!

Buddernugs

Well-Known Member
So this is my fourth attempt at going to start to finish with advance nutrient line sensi Grow. With their “PH perfect technology“…… and yet again I’m seeing what looks to be zinc and magnesium issues does anyone else have issues with this line? I start off with ro water add 275 to 300 ppm cal mag/ 2ml per gal silica then a and b….after I add silic first which raises my ph to 8.7 so I bring it down to 6.2 then add the rest…….this same issue pops up every time I use this line…..is it lacking something? Was useing coco tek but hydro stor said they can’t get any more because they stopped makeing it… never had these issues with good ol cocotek…..got some house and garden coco on the way and I’m going to switch over to that, they say That stuff is good in veg and flower but I don’t know how I feel about that so I’m just gonna use it for veg and probably end up switching over to General hydroponics 2 part duo
 

Psyphish

Well-Known Member
You're fucking with the recipe too much. First you're adding silicate that raises pH, then you're adding pH down. The Sensi only works if you don't add anything that messes with pH. I've used the line for years and have no problems with 2~ml of A & B / Liter. I don't measure my pH and I definitely don't adjust it. If you want to mix different brands and adjust things, then you should just not use the pH-perfect stuff.
 

Buddernugs

Well-Known Member
You're fucking with the recipe too much. First you're adding silicate that raises pH, then you're adding pH down. The Sensi only works if you don't add anything that messes with pH. I've used the line for years and have no problems with 2~ml of A & B / Liter. I don't measure my pH and I definitely don't adjust it. If you want to mix different brands and adjust things, then you should just not use the pH-perfect stuff.
Their 10 part feeding schedule on their website includes the same silica that I’m using I get what you’re saying though I agree
 

Psyphish

Well-Known Member
Never had to do that in my life, more AN bullshit lies.
So your pH sticks to a stable 5.8 with Lucas formula or h3ad's formula for example? I guess everyone should stop selling pH meters and such if they're not needed, ever. I'll shoot an email to General Hydroponics and tell them they're idiots for making a pH down product.
 

budman111

Well-Known Member
So your pH sticks to a stable 5.8 with Lucas formula or h3ad's formula for example? I guess everyone should stop selling pH meters and such if they're not needed, ever. I'll shoot an email to General Hydroponics and tell them they're idiots for making a pH down product.
Never used Lucas formula or h3ad's formula but I use Canna and my pH stays within the desirable range, NEVER EVER had pH burn and NEVER checked pH again after I realized that I don't have to or even need to, growers put in a dozen bottles and then wonder why there's a problem
 

Buddernugs

Well-Known Member
I know I was shocked to when I was at 200ppm and started seeing classic cal mag issues, then again at 250….out of everything iv grow to date,by far ilgm blue dream has been the biggest cal mag slob iv ever seen……..kept cal mag at 250-300 during entire 7 week veg from seed…..after i Flipped them they showed signs that continued to get worse untill I bumped them up to 350ppm
 

PJ Diaz

Well-Known Member
So I start with 3-4PPM ro water and I’m also in coco dtw so I need that cal mag
I grow in coco dtw using RO water as well. I don't use CalMag at all. I use Jacks 321 @ 650ppm (1.3EC) start to finish (give or take 50ppm). Jacks 321 has plenty of Ca and Mag on it's own. Here's a pic I snapped this morning, 2 plants in a 4x4 @ 2-weeks 12/12:

IMG_20210614_100137562.jpg

IMG_20210612_110738913 (1).jpg
 
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