Mega Crop 3.o is shipping, also Mega Crop Part A and Part B

DrKiz

DrKiz

Well-Known Member
TintEastwood said:
Talking coco.
Not sure. That's something I'm still learning.

Ie. How much Ca (and or Mg) is needed mid/late flower.
When and how much to cut back on Part-b calnit.
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Yeah, I’m hitting them a little hard with N during stretch. Thought part A might be great for after stretch.

I think I’ll wait a bit and see how this new part A is, and how long/if they reformulate it before I’m done the last 1/4 bag of V.3.

Looks interesting as megacrop V.3 definitely aces it in veg for me with a little added mg.

I’ve definitely witnessed nutrient changes through the stages of flower.

This time late flower I’m dropping PPFD and heat. Foxtails. Grr. Not sure if it’s from too much N or the former details.
 
7

780grow

Member
Anyone experience this issue with mega crop? Discoloration and darkening, mostly on larger fan leaves. Looking for a second opinion. 34 days since flip
Thanks
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Aeroknow

Aeroknow

Well-Known Member
AquaTerra said:
What issues are you having? I have a customer who is running 30+ lights (Gavita 1000W) using MC and some GH/Botanicare additives and getting 2Lb+ dry per light.
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I had to take a long break due to being burned down but before fire I was rockin the original MC with zero additives. I’m finally fired back up and used the 2.0(no other additives) I hit the same numbers using 1000w DE’s. 3+ lb’s a light from most of the strains i got.
While they were recently out of the MC I had to go back to maxigro/bloom but picked up a couple bags of the new 3.0 once they notified me and just ordered a couple more. We’ll see how this stuff goes but i’m pretty sure i like it already and will be buying a half pallet here soon.
 
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visajoe1

visajoe1

Well-Known Member
780grow said:
Anyone experience this issue with mega crop? Discoloration and darkening, mostly on larger fan leaves. Looking for a second opinion. 34 days since flip
Thanks
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What ec are you feeding? how often? Medium? pot size? temp/rh? This is the time when excess or deficiencies begin to show, my first thought is excess, but lets not assume anything yet.
 
AquaTerra

AquaTerra

Well-Known Member
visajoe1

visajoe1

Well-Known Member
AquaTerra said:
Well from the tips looks like nutrients burn and calcium or potassium deficiency.
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excess and deficiency at the same time huh? considering megacrop is roughly a 2-1-3, I'm gonna say K def is ruled out. Plenty of CA in it too. we'll wait to see what the specs are of this grow then go from there, i dont like to assume based off a pic and no info
 
visajoe1

visajoe1

Well-Known Member
Aeroknow said:
I had to take a long break due to being burned down but before fire I was rockin the original MC with zero additives. I’m finally fired back up and used the 2.0(no other additives) I hit the same numbers using 1000w DE’s. 3+ lb’s a light from most of the strains i got.
While they were recently out of the MC I had to go back to maxigro/bloom but picked up a couple bags of the new 3.0 once they notified me and just ordered a couple more. We’ll see how this stuff goes but i’m pretty sure i like it already and will be buying a half pallet here soon.
Click to expand...
i run maxigro start to finish in FF/OF, potassium bicarbonate for ph up. If I feel the need for a P boost, which usually is a bad idea lol, i can bump it up with a booster. however, if i would try anything else it would be MC, let us know how the new formula works for you
 
AquaTerra

AquaTerra

Well-Known Member
visajoe1 said:
excess and deficiency at the same time huh? considering megacrop is roughly a 2-1-3, I'm gonna say K def is ruled out. Plenty of CA in it too. we'll wait to see what the specs are of this grow then go from there, i dont like to assume based off a pic and no info
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If there's too much nutrients build up in the media then yes you'll have toxic salt level lowering the ph inside the media. Which then will cause calcium deficiency.

Doing a run off test for ppm/etc and PH and knowing what PH he's feeding at would be a good start.
 
Aeroknow

Aeroknow

Well-Known Member
visajoe1 said:
i run maxigro start to finish in FF/OF, potassium bicarbonate for ph up. If I feel the need for a P boost, which usually is a bad idea lol, i can bump it up with a booster. however, if i would try anything else it would be MC, let us know how the new formula works for you
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I’ve rocked the maxi series since they came out, gro until 2 weeks in then bloom, pretty complete formula imo. Never really had a problem with decent tap water. Problems with RO water and Ca problems. Add coco to that and Ca problems are usually about the worst that happens.

this new property, my well water is 8.0 ph, pretty low EC, but mostly alkaline. Little bit of experimenting to do, but already kill it with just ph corrected MC. I’m sure this new 3.0 will work good. Just haven’t done a whole crop start to finish with it.
 
7

780grow

Member
visajoe1 said:
What ec are you feeding? how often? Medium? pot size? temp/rh? This is the time when excess or deficiencies begin to show, my first thought is excess, but lets not assume anything yet.
Click to expand...
AquaTerra said:
Well from the tips looks like nutrients burn and calcium or potassium deficiency.
Click to expand...
In 5 gallon fabric pot. Using ppm pen, currently at around 1100ppm, my water is 200ppm. Temps 18-25c, RH 50-55%
Promix HP. Feeding every 3 days or so.
Havent ph'd my water as ive heard you dont need to in promix but ill be doing it again just incase thats the issue.

Ended up flushing with 4 gallons of 6.5ph water followed by 1.5g of 6g/g Mc...see how she responds
 
AquaTerra

AquaTerra

Well-Known Member
780grow said:
In 5 gallon fabric pot. Using ppm pen, currently at around 1100ppm, my water is 200ppm. Temps 18-25c, RH 50-55%
Promix HP. Feeding every 3 days or so.
Havent ph'd my water as ive heard you dont need to in promix but ill be doing it again just incase thats the issue.

Ended up flushing with 4 gallons of 6.5ph water followed by 1.5g of 6g/g Mc...see how she responds
Click to expand...
I'd still PH the feed water with Pro Mix. It has lime in it to bring the PH of the peat up as peat is naturally very low ph. If you are feeding 1100ppm the ph of your feed will be very low.

Catch any run off a test ppm and ph of that also.
 
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visajoe1

visajoe1

Well-Known Member
780grow said:
In 5 gallon fabric pot. Using ppm pen, currently at around 1100ppm, my water is 200ppm. Temps 18-25c, RH 50-55%
Promix HP. Feeding every 3 days or so.
Havent ph'd my water as ive heard you dont need to in promix but ill be doing it again just incase thats the issue.

Ended up flushing with 4 gallons of 6.5ph water followed by 1.5g of 6g/g Mc...see how she responds
Click to expand...
Like @AquaTerra said, ph feed solution is recommended and measuring runoff. 1100ppm might be a bit high for most strains, but if your runoff is consistently coming out lower than what you're feeding, then ok.

however, i dont think thats the case here. you'll confirm if you do measure runoff.

IMO, you have an excess issue. Give water only, and measure runoff. Feed her when runoff gets to .7ec.
Late in flower, you can let runoff go down to .25ec

water is the easiest fix!
 
Mikenike

Mikenike

Well-Known Member
Has anyone else had a chance to use the new Megacrop yet? I’m having almost half a tsp of sediment/silt stuff that’s going undissolved in a gal of RO water. Mostly black kelp flakes and some white salts. Their two part dissolved nicely tho
 
J

J-Icky

Well-Known Member
Couldn’t too much K cause a magnesium lockout and possibly calcium too.
I run in coco and in one strain if the level of K goes too high I get that exact leaf issue which is easily fixed with a flush and a boost of Epsom salts on top on my usual feed.
 
Coalcat

Coalcat

Well-Known Member
Aeroknow said:
I’ve rocked the maxi series since they came out, gro until 2 weeks in then bloom, pretty complete formula imo. Never really had a problem with decent tap water. Problems with RO water and Ca problems. Add coco to that and Ca problems are usually about the worst that happens.

this new property, my well water is 8.0 ph, pretty low EC, but mostly alkaline. Little bit of experimenting to do, but already kill it with just ph corrected MC. I’m sure this new 3.0 will work good. Just haven’t done a whole crop start to finish with it.
Click to expand...
That’s funny I use maxibloom too (Lucas formula fan). I have been working though a big bag of v1 Megacrop and it’s been working great...the ph does creep up and it’s much more stable with the maxibloom. Right now I’m doing a side by side on mega vs maxi on some clones and it will be it will be interesting what the final product. Almost in week 7 and the only noticeable diff is the maxibloom has started to fade some while the mega is green as ever. I use no additives except 1 tsp of epsom salt per 3 gal (and I use it on both)
 
Attikus112

Attikus112

Well-Known Member
Just picked up a bag of the A & B myself. I was using version 2 before and so far I'm pleased. The dust isn't as bad with this version (it's a slightly coarser grind), no horrible smell, and I'm hoping for better flexibility with the two part.

It mixed completely with my water with minimal effort, and the final solution came out clear. My pH came out around 6.5 with the recommended veg mix (1.5g A 2.5g B) and 6.1 with the bloom (4.2g A 1.8g B). Veg mix came out to an EC of 1.2 and the bloom was about 1.7. I do wish the calnit was crushed but that's a minor complaint. Hopefully it works well.
 
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