Iron def? Caused by too much P?

firemarshall22 said:

Your plants look great and look just like my strains used to look with CES Nutrients.

I notice you aren't using just Jacks 321 though. You are using supplements too.

Which gets me back to my point, Jacks 321 is not complete as all the youtube videos say.

I bought Jacks 321 to learn how each micro/macro works and be able to adjust them, so if it's just the MPK I need to buy and play around so be it.

I did go out and purchase CaliMagic and tried adding this at 1.2ml per gallon and then 2.5ml per gallon. No change.

I tried switching from my R/O water (20ppm) to store bought distilled water and no change.

And this last couple weeks I have been using 3/4 distilled water and 1/4 (24 hour sitting out) of my home tap water, which comes out to 115ppm as my base water before nutrients.

My environment is spot on, I have good gear. Cloudine t8 with temp/humidity controller, fans for air flow, I'm in a tent with my own leds (samsung 301b) - my numbers are 500-600 depending on how tall each plant is.. I use apogee sq520 for readings.

Would you mind recommending which MPK I should buy?

And also, what is your ppm towards end of veg?

Thank you!

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TintEastwood said:

I stopped using mpk several runs ago. Finding it better to adjust the jacks AB ratios.

You mentioned veg problems. In veg I keep it simple.
View attachment 4771947

Most recent runs in flower I've been jacking around with different NPK ratios, with very few supplements other than calimagic and Si.

I've had my share of horrible calmag and K tox in the past. But that was all me.

I typically dont exceed 1.8ec.
Week 9 I'm at 800. 1.6ec



Megacrop and their feed recs.
Broken down.
View attachment 4771954

Click to expand...

TintEastwood said:

I stopped using mpk several runs ago. Finding it better to adjust the jacks AB ratios.

You mentioned veg problems. In veg I keep it simple.
View attachment 4771947

Most recent runs in flower I've been jacking around with different NPK ratios, with very few supplements other than calimagic and Si.

I've had my share of horrible calmag and K tox in the past. But that was all me.

I typically dont exceed 1.8ec.
Week 9 I'm at 800. 1.6ec



Megacrop and their feed recs.
Broken down.
View attachment 4771954

Click to expand...

firemarshall22 said:

Very pretty, thanks so much for the response, with the pictures.

Do you use these two nutrients the entire life, all the way through flower?

Thank you!

Click to expand...