Dialing In MEGA CROP for Auto's

[4d-Rock]

You know what the highest ppm/ec was that you were running?

Ya, toward the end the highest was about 850ppm.
That’s 60 base water ppm, with the addition of 0.75g/gal SC, 4g/gal MC, and 1.5g/gal BE.

 

[GeorgeCloney]

Just to add my $0.02 fwiw

I feed with MC (1 part).Every geed.
Late seedling to early flower at 550ppm.
Every feed has a 50 to 70ppm addition of calmag.
By late veg, or start of flowers...
I drop the nute mix by 100ppm and use SC to top up back to 500ppm.
Some strains require tweaking in the proportions.
But in general, plants do well with this mix.
The proper answer about using any nute is to look and listen to your olants.
Give them what they want, not viceversa.

 

[Nosias]

I have some Cal/Mg issues myself. I was not using enough. I thought since the ladies were doing good there was no need. Well it is Cal/Mg for me every fill up of the rez. I am using the one part MCv3. Love its ease of use and lack of the brown cloud of dust when you use it. The ladies will get back into shape. Good luck to one and all.

 

[elcoloan]

I have some Cal/Mg issues myself. I was not using enough. I thought since the ladies were doing good there was no need. Well it is Cal/Mg for me every fill up of the rez....

And how much Cal/Mg are you using each fillup?

 

[Nosias]

And how much Cal/Mg are you using each fillup?

0.40 per liter is what I used yesterday. So 4.8 grams for 12 liters. Today thay look a bit worn down. I am seeing the browning of some the leaves with spotting. Also the ladies are showing their flowers.

 

[4d-Rock]

Good to know @GeorgeCloney and @Nosias , thanks.
I've got a few plants at about Day 16. Plain water for first week, second week they received 0.5g/gal Sweet Candy (old version), 0.5g/gal Epsom, and 2g/gal MC.
They are ready for a feed today and will be upping the MC to get up to that 500-550 ppm range.

You guys are making me second guess whether I should be adding CalMag in every time. I see all over the forums people saying how much people are over-feeding CalMag which leads to lockout of other nutrients and it makes me wary of supplementing with Calmag unless I see an issue.

 

[Kyote]

Good to know @GeorgeCloney and @Nosias , thanks.
I've got a few plants at about Day 16. Plain water for first week, second week they received 0.5g/gal Sweet Candy (old version), 0.5g/gal Epsom, and 2g/gal MC.
They are ready for a feed today and will be upping the MC to get up to that 500-550 ppm range.

You guys are making me second guess whether I should be adding CalMag in every time. I see all over the forums people saying how much people are over-feeding CalMag which leads to lockout of other nutrients and it makes me wary of supplementing with Calmag unless I see an issue.

I went .5g/gal with cal mag pro every feeding with last indoor grow up until later in flower, then stopped and only 2g mc, .75g on the SC and BE.

 

[elcoloan]

I went .5g/gal with cal mag pro...

That's around 30 ppms... interesting.

 

[Kyote]

That's around 30 ppms... interesting.

I checked the journal and on day 14 I said this:
First H2O with nutrients @ 1/3rd dosage. Mega Crop (MC), Cal/Mag Pro (CMP) and Sweet Candy (SC) per gallon. Watered 2 cups. 6.5ph

I read more and saw where i went up to 1g/gal on the Cal/Mag @ 1 month or so

 

[terp182]

Is there a consensus on how (or if?) to supplement MegaCrop with CalMag? I just topped off my autopot res with 3g/gal MC and 2.5 ml/Gal CalMag and immediately saw huge mag deficiency issues across all three pots. I gave a epsom salt foliar feed (1 tsp/gal) and they responded well, so I added some dissolved mag to the reservoir. They were at 560 ppm, after seeing their reaction I diluted with the epsom solution to about 470. pH is 5.9-6.1.

I'm growing in mostly coco/perlite with some added Roots Organic soil thrown in (won't be repeating that mistake - next time it's either/or with perlite). I'm seeing massive spotting on light exposed areas of lower leaves on my CDLC plant, with yellowing across nodes on my Zama Express and now Double Grape.

Any tips for baselining my nute rate? 3g/gal MC seems OK but I'm fucking up the calmag somehow. I got advised to add cal in another thread for my Zamaldelica Express, but in another thread I saw someone mention getting good results with 3g/gal MC, 3ml/gal CalMag and .25 g/gal epsom. Any and all insight is appreciated! My girls are hurting right now while I try to get this sorted.