The Mega Crop Thread

[Flatfish]

Using the numbers on their bag at 5.5g I get 160-32-169 with Ca:109 and Mg: 20 running it through the calculator, so no idea why they're online numbers would be different.

The current listed bag has a Mg:Ca ratio of 1:5.3 rather than the 1:2 ratio I prefer to run and I stopped using their calculator shortly after I found a legit on for free online.

Good morning Shed !
Yes those are the same numbers that I get from the bag proportions. The nitrogen proportion must include the 2% soluble.
Perhaps the Mg numbers are higher from another ingredient that is not a salt ?
Just don't want to add too much supplement Epsom if it coming already from within the MC ?
Your ratio of the additional Epsom seems to work, at !east with your water so we will start with that.
Always appreciate your input when trying something new !!

 

[bluter]

if you need the extra a proper cal-mag supplement works better than the epsom salts.

edit : a little known side effect of epsom salts is an increased proclivity to bud rot.

 

[Flatfish]

if you need the extra a proper cal-mag supplement works better than the epsom salts.

edit : a little known side effect of epsom salts is an increased proclivity to bud rot.

Thanks Bluster ! Will keep that in mind ! Is this due to the extra sulfur ?

 

[bluter]

Thanks Bluster ! Will keep that in mind ! Is this due to the extra sulfur ?

not entirely sure. most gardening books will mention it. sulphur normally works to combat bud rot. there are some flowering plants that epsom will outright kill, but ours are much heartier than those.

 

[InTheShed]

if you need the extra a proper cal-mag supplement works better than the epsom salts

But MC has plenty of Ca in it, which is why Epsom salt is better with it. Excess calcium locks out a lot of other elements.

 

[StarkRaven]

But MC has plenty of Ca in it, which is why Epsom salt is better with it. Excess calcium locks out a lot of other elements.

Why does cal mag help nutrient uptake then? Or am I misunderstanding how this works I thought the calcium made the branches sturdy and the magnesium helped uptake?

 

[Trala]

But MC has plenty of Ca in it, which is why Epsom salt is better with it. Excess calcium locks out a lot of other elements.

Oiii Shed.

I’m an accidental coco user atm.

I don’t do any of that ppm pH stuff. Only MC. I do however have a bottle of CalMag. Should I add that to my coco section grow, or MC and watch and wait?

 

[Grand Daddy Black]

Oiii Shed.

I’m an accidental coco user atm.

I don’t do any of that ppm pH stuff. Only MC. I do however have a bottle of CalMag. Should I add that to my coco section grow, or MC and watch and wait?

Yes on the calmag, Tra. But you'll likely need to pH your MC solution prior to feeding plants when in coco. Ignore me if you choose to (I've mentioned it to you before). I won't mention it again.

(Do you know the pH of the water you're using for feeds?)

 

[InTheShed]

Why does cal mag help nutrient uptake then? Or am I misunderstanding how this works I thought the calcium made the branches sturdy and the magnesium helped uptake?

I don't know what elements help nutrient uptake, just that the correct balance of elements is as important as not overfeeding anything that could lock out anything else. And adding more calcium to MC can get you into trouble.

I don’t do any of that ppm pH stuff. Only MC. I do however have a bottle of CalMag. Should I add that to my coco section grow, or MC and watch and wait?

As GDB said coco nutes need to be pH adjusted since coco is hydro. Also, coco binds to magnesium and calcium so many coco growers will add cal mag to coco to compensate for that.

How much I don't know but folks like P9 and Bill certainly would. Either way, my opinion is that the balance in MC is wrong for plants.

 

[Trala]

Yes on the calmag, Tra. But you'll likely need to pH your MC solution prior to feeding plants when in coco. Ignore me if you choose to (I've mentioned it to you before). I won't mention it again.

(Do you know the pH of the water you're using for feeds?)

Hi GDB

Thanks for taking the time to offer your advice and I am also sorry if you felt your advice has been ignored but… lol

I’m not about pH when it comes to gardening. And I have zero idea what the pH of my water is. It’s just not my grow style. While I love watching the results of other growers using a more scientific formula, it’s just not me. I will just ride this batch of coco, using MC and adding a sprinkle of CalMag and go back to the grow soil I’m used to when it comes to my next uppot.

Again, thanks for your advice

 

[Trala]

As GDB said coco nutes need to be pH adjusted since coco is hydro. Also, coco binds to magnesium and calcium so many coco growers will add cal mag to coco to compensate for that.

How much I don't know but folks like P9 and Bill certainly would. Either way, my opinion is that the balance in MC is wrong for plants.

Thanks Shed

I’m not interested in pHing or buying more products. I’ve been super happy with Mega Crop. It’s a nute that suits my more casual grow style. I don’t use any other products. It’s only an accidental that I actually have CalMag. My hydro guy gave me a bottle for Xmas two years ago lol.

I will just wing it for now. My plants look really happy, but it is veg and it is early days. If they start to flounder I’ll just uppot them out of the coco sooner and go back to basics.

 

[Grand Daddy Black]

Hi GDB

Thanks for taking the time to offer your advice and I am also sorry if you felt your advice has been ignored but… lol

I’m not about pH when it comes to gardening. And I have zero idea what the pH of my water is. It’s just not my grow style. While I love watching the results of other growers using a more scientific formula, it’s just not me. I will just ride this batch of coco, using MC and adding a sprinkle of CalMag and go back to the grow soil I’m used to when it comes to my next uppot.

Again, thanks for your advice

Not a problem, Tra! I'm used to being ignored!

 

[bluter]

I don't know what elements help nutrient uptake, just that the correct balance of elements is as important as not overfeeding anything that could lock out anything else. And adding more calcium to MC can get you into trouble.

i've been running calmag from just before mid veg forward. i just watch for any signs and begin when it shows.

As GDB said coco nutes need to be pH adjusted since coco is hydro. Also, coco binds to magnesium and calcium so many coco growers will add cal mag to coco to compensate for that.

How much I don't know but folks like P9 and Bill certainly would. Either way, my opinion is that the balance in MC is wrong for plants.

i'm in hempy and think it partly has something to do with the extreme neutrality of the media. both coco and hempy just don't have anything in the background.

i run calmag at about half levels at the max which is similar to what is going on in coco and where bill is at. led is also known to pull it out of the plant. those running high power led will often see a higher need.

 

[LKABudMan]

Oiii Shed.

I’m an accidental coco user atm.

I don’t do any of that ppm pH stuff. Only MC. I do however have a bottle of CalMag. Should I add that to my coco section grow, or MC and watch and wait?

I'm using MC with Coco and no additional calmag needed. Only add calmag if your plants ask for it.

 

[InTheShed]

i run calmag at about half levels at the max which is similar to what is going on in coco and where bill is at. led is also known to pull it out of the plant. those running high power led will often see a higher need.

What version of MC are you running? Flatfish and I were talking specifically about the latest version.

 

[LKABudMan]

I'm not sure what version, here's what I got from the bag:

Edited to add: I've never needed cal-mag but I do add Epsom starting in flower at .75 grams per gallon.

 

[bluter]

What version of MC are you running? Flatfish and I were talking specifically about the latest version.

i'm pretty sure it's one of the earlier 2.

 

[Melville Hobbes]

I'm not sure what version, here's what I got from the bag:

Edited to add: I've never needed cal-mag but I do add Epsom starting in flower at .75 grams per gallon.

i'm pretty sure it's one of the earlier 2.

It's not v1. That's 9-6-17 with 7 Ca, and 2.5 Mg unless I'm mistaken.
For what it's worth, I've been using whichever version of MC I have in hempy exactly the same way as I did in soil.
I don't ph it, and I have added cal-mag only when needed.

 

[Grand Daddy Black]

I've got a brand new bag of 11-5-14 MC and a new bag of the 9-6-17 MC.

I came here seeking guidance on which one to open. Now I'm totally confused!

 

[Melville Hobbes]

I've got a brand new bag of 11-5-14 MC and a new bag of the 9-6-17 MC.

I came here seeking guidance on which one to open. Now I'm totally confused!

Open both and use them on a pair of clones to see which you like better?