Dialing In MEGA CROP for Auto's

[pop22]

Sounds to me like your mistaking their minimum requirements for the max available in the nutrient. I rather doubt that 0.4PPB ( parts per billion ) is going to matter in the least. How much is available in natural soil?

Mainly general plants (ie; strawberries, peppers, tomatoes). All use about five times less of copper, zinc & Manganese or molybdenum
That's why I was asking as there isn't much (correct) info to be found about the subject. And since Greenleaf Nutrients shared it's recipe on their website it's open for debate.
Most of the time nutrient company's don't share their recipes. The WUR (Research University of Wageningen) on the other hand does share it's recipes based upon their research. You just have to ask. Now they are doing research on Cannabis, but it is far from ready yet...
I got the base recipes for pepper, tomatoes and strawberries from them and based on that information Copper is used at 0.04xxx ppm not at all does it go near 0.25 ppm which for peppers would be about five times as high (ie, 0.04766 ppm) and would cause serious problems with nose rot. Just to say
But, and this is a big but... Cannabis ain't no Pepper so it could be that they use up way more micro nutrients as the other one. Only well documented research can give a definite answer.

 

[Nosias]

Hey @terp182 , early flowering is always where I seem to run into little deficiencies or imbalances with Mega Crop 1 part. Unfortunately I have yet to find a solution for it to have a start to finish healthy grow. I've tried playing around with Sweet Candy, Bud Explosion, and Cal-mag supplements. I can still get a reasonable plant, but always run into some problem or another.

same here. we see a great start to be confused by what went "off". But with love we see them to harvest.

 

[terp182]

Yes, that's calcium def, because you deducted the BE from the MC the BE. The BE is just not needed and even Greenleaf tewlls you no additives are needed. But if you really feel you have to use it, then reduce the MC to no less than 500 ppms and add to that. I'd not just add cal/mag as running 375 ppms of MC means you've reduced the available micronutrients alo and you'll soon be deficient in them also. run 500 ppms MC and add the BE to that. I'd just skip the BE.

Goddamn it. This makes perfect sense. I'm chasing returns and shorting micronutrients.

Thanks so much for the quick reply. I'm just gonna siphon off half of the res, and top it off with full strength MC only. The onset was 100% consistent with diluting the base MC to 300ish.

 

[pop22]

It happens to all of us. We sometimes just overlook the obvious! But you should be fine with the adjustment you plan to make.

Goddamn it. This makes perfect sense. I'm chasing returns and shorting micronutrients.

Thanks so much for the quick reply. I'm just gonna siphon off half of the res, and top it off with full strength MC only. The onset was 100% consistent with diluting the base MC to 300ish.

 

[Nosias]

Goddamn it. This makes perfect sense. I'm chasing returns and shorting micronutrients.

Thanks so much for the quick reply. I'm just gonna siphon off half of the res, and top it off with full strength MC only. The onset was 100% consistent with diluting the base MC to 300ish.

 

[Bob's Auto's]

Sounds to me like your mistaking their minimum requirements for the max available in the nutrient. I rather doubt that 0.4PPB ( parts per billion ) is going to matter in the least. How much is available in natural soil?

Is ppb? Then I've misread. Thought those where ppm.

 

[Dragoond2]

Is their a salt build up with mega crop? Should I be watering to runoff? If so how much? Currently I'm doing only a cup or two of runoff out if about a gallon of water. I check my runoff to see how much they are eating (not sure if I can do this with MC) the runoff is higher ec than what I'm watering with.

 

[pop22]

Sorry, saw a zero that wasn't there lol. however (0.4333 ppm) round it of and it's still 0 .4 ppm , less than one ppm

Is their a salt build up with mega crop? Should I be watering to runoff? If so how much? Currently I'm doing only a cup or two of runoff out if about a gallon of water. I check my runoff to see how much they are eating (not sure if I can do this with MC) the runoff is higher ec than what I'm watering with.

 

[pop22]

Salts build up is not much of a problem with MC IF you keep the ppms low. I've used it in auto pots that I never changed the soil in for 2.5 years. Never flushed them and never gave them water. Not once did I have an issue with excess nutrients. I keep my ppms below 550ppm. I don't bother with checking runoff and I rarely water to run off.

This is my results

Is their a salt build up with mega crop? Should I be watering to runoff? If so how much? Currently I'm doing only a cup or two of runoff out if about a gallon of water. I check my runoff to see how much they are eating (not sure if I can do this with MC) the runoff is higher ec than what I'm watering with.

 

[Nosias]

Salts build up is not much of a problem with MC IF you keep the ppms low. I've used it in auto pots that I never changed the soil in for 2.5 years. Never flushed them and never gave them water. Not once did I have an issue with excess nutrients. I keep my ppms below 550ppm. I don't bother with checking runoff and I rarely water to run off.

This is my results

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