The Mega Crop Thread

Old Salt said:
That's why I try keep my tents serially monogamous to date. There can be only one strain at a time per tent.
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Why is that? I have many strains in one room. I cluster them by strain. I have heard stories but haven't seen anything myself. Just curious
 
Momma’s Kitchen said:
Why is that? I have many strains in one room. I cluster them by strain. I have heard stories but haven't seen anything myself. Just curious
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Lack-o-room disease, and working hard to be lazy.

I grow in two small tents,with one light in each. The plants must be close to the same height.

I have one automatic watering system that can feed both tents. Plants flowering in coco/ perlite require three feed per day. I don't mind hand watering one tent that's in veg with one or two feeds per day. I don't mind mixing two strengths of my nutrients, as they last more than a day or two.

I do want to keep it simple. It's all part of my working hard to be lazy philosophy.
 
FelipeBlu said:
Not necessarily Ca toxicity, but excessive Ca in the medium (e.g. from high ppm water, low transpiration, unnecessary use of CalMag, etc.), can certainly compete with P, K, Mg, Fe, Mn, Zn, and B, causing multiple deficiencies.

Excessive N can compete with K, causing K def.
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Hi Felipe,
I know and understand everything you stated but the point I am trying to make seems to be going past everyone. Yes, too much Ca in the medium will cause issues(read back to an earlier post where I stated this). All I have been trying to say is that MC alone will not cause an excessive buildup to cause lockout at 5g/gal which is what has been stated.
What I have said over and over again is that it COULD be a crappy buffered medium after cutting the LOS with FFOF.
The fact the plant was flushed and his issues persist also confirms that there was/is no buildup in the medium.
If his NPK ratios in the soil are out of whack from mixing two mediums and maybe high in K then his soil would most likely be acidic.

Water akalinity directly affects the pH of the medium, the higher the akalinity the faster the pH will rise in the medium. Since he's mixed two mediums together, not knowing what his water akalinity is, the quickest way was to do a slurry test to determine what the pH was of his medium and correct it if needed.

Again, I'm not saying it's pH related, nor am I saying it's poor water quality, but unless you do that basic test you have no idea what you are dealing with and just chasing your tail.
 
MrSauga said:
Hi Felipe,
I know and understand everything you stated but the point I am trying to make seems to be going past everyone. Yes, too much Ca in the medium will cause issues(read back to an earlier post where I stated this). All I have been trying to say is that MC alone will not cause an excessive buildup to cause lockout at 5g/gal which is what has been stated.
What I have said over and over again is that it COULD be a crappy buffered medium after cutting the LOS with FFOF.
The fact the plant was flushed and his issues persist also confirms that there was/is no buildup in the medium.
If his NPK ratios in the soil are out of whack from mixing two mediums and maybe high in K then his soil would most likely be acidic.

Water akalinity directly affects the pH of the medium, the higher the akalinity the higher the pH will rise in the medium. Since he's mixed two mediums together, not knowing what his water akalinity is, the quickest way was to do a slurry test to determine what the pH was of his medium and correct it if needed.

Again, I'm not saying it's pH related, nor am I saying it's poor water quality, but unless you do that basic test you have no idea what you are dealing with and just chasing your tail.
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I get that. I believe we are covering the same ground.
 
Deketx said:
I flushed with tap, distilled would have been cost prohibitive for 8 plants in 5gal. When I water I use tap through a britta filter or distilled if I have it. The temps are in the low 70's and the humidity is low. I grow in a large room, no tent, just partitions I made to enclose the plants.
As far as ph, couldn't tell you. I'll have to get a ph meter. Having many diff strains sounds like a great idea until they all do and want some thing different.
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you need to get control of your water and ph dek. with that i think your issues will melt away in the future.

you may be able to push a couple of the variables, but being unaware of them is not a plan. at the very least you'll have a much better idea of what to rule out when facing issues.
 
I am still having a bit of a issue with one of the plants Tutankhomun. New growth is coming in Molted it's getting worse. I was advised to up the dosage to 5.5 from 5 gm/gl which I did. Day 52 of veg in promix HP PH 6ish. At this point I am reluctant to go up to 6 gm as the color is very dark green now it's doesnt show well in the pics if you zoom in you can see it.
IMG_20200209_130620.jpgIMG_20200209_130633.jpgIMG_20200209_130644.jpg
 
oldsmokey said:
I am still having a bit of a issue with one of the plants Tutankhomun. New growth is coming in Molted it's getting worse. I was advised to up the dosage to 5.5 from 5 gm/gl which I did. Day 52 of veg in promix HP PH 6ish. At this point I am reluctant to go up to 6 gm as the color is very dark green now it's doesnt show well in the pics if you zoom in you can see it.
IMG_20200209_130620.jpgIMG_20200209_130633.jpgIMG_20200209_130644.jpg
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Taken directly from the MC website:

If your plant leaves are too dark green and/or have burned tips, then scale back your MEGA CROP dosage to reduce the nitrogen.
 
oldsmokey said:
I am still having a bit of a issue with one of the plants Tutankhomun. New growth is coming in Molted it's getting worse. I was advised to up the dosage to 5.5 from 5 gm/gl which I did. Day 52 of veg in promix HP PH 6ish. At this point I am reluctant to go up to 6 gm as the color is very dark green now it's doesnt show well in the pics if you zoom in you can see it.
IMG_20200209_130620.jpgIMG_20200209_130633.jpgIMG_20200209_130644.jpg
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Looks very green.
 
732002 said:
Bluter
"mega crop can even be used to supplement organic, and living organic soil grows, without fear of disrupting the microbial content organics rely on. makes it a good idea to have on hand if your organics get hungry later in the grow."

Good to know, I was unaware of this.

I'm five weeks into a auto and have been letting promix HP dry out between feeds, at this age should I be feeding more often and not letting it get so dry?
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@732002 you must be in flowering or preflower with at 5 weeks?
I was told to not let soil dry out as much when in flower vs veg, you want it to dry but not veg dry.
 
ColonelBlake said:
Taken directly from the MC website:

If your plant leaves are too dark green and/or have burned tips, then scale back your MEGA CROP dosage to reduce the nitrogen.
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This first started at 3 gm/gl increased to 4 gm/gl that seem to solve it then it showed up again when I was at 5gm/gl. I've gone up to 5.5gm/gl it getting worse. So I'm not sure lowering the dosage is going to help and I am hesitant on going much higher. MC feed calculator shows 6gm/gl as max in full flower. I have also seen some bad things happened on here with people pushing the limits.
 
oldsmokey said:
I am still having a bit of a issue with one of the plants Tutankhomun. New growth is coming in Molted it's getting worse.
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I'm not sure I see what you're talking about. What do you mean by molted? The light green new growth as opposed to the darker old growth?
 
oldsmokey said:
I am still having a bit of a issue with one of the plants Tutankhomun. New growth is coming in Molted it's getting worse. I was advised to up the dosage to 5.5 from 5 gm/gl which I did. Day 52 of veg in promix HP PH 6ish. At this point I am reluctant to go up to 6 gm as the color is very dark green now it's doesnt show well in the pics if you zoom in you can see it.
IMG_20200209_130620.jpgIMG_20200209_130633.jpgIMG_20200209_130644.jpg
Click to expand...
When my plants start to look like that, I bump the MC up. I also bump up the pH. In my thinking, they are putting out new growth fast, and would like a bit more mag. I don't like adding mag to the feed or medium because I think it tightens up the medium so there's not as much O2 at the root zone. Mg is taken up a little better with pH of 6.0 or a little higher.

That look can also come from growing pains from growing up quickly, and then they just grow out of it with no help needed, especially in soil mixes.
 
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