Greenleaf Nutrients MEGA CROP Q&A/Support/Pictures/Feedback/Anything thread

[GreenleafNutrients]

@GreenleafNutrients

Jack’s Classic Citrus

You are welcome to use whatever product you like obviously, but let me correct you on a few points. Our 21.7lb bag is $67 delivered within the USA. That means it is $3.08 per lb. Your Jacks order is $19.45 for 1.5lbs, which makes it $12.96 per lb. That means it costs over 4x the price of MEGA CROP. So you were using an example for cost comparison on a lower size MEGA CROP which is repackaged and we use mostly for free sample giveaways to customers.

Jacks has lots of UREA, you would probably better off using Miracle Grow from Home Depot or local Walmart based on the situation you described than Jacks. Fertilizers with UREA cannot be used in hydroponics at all, MEGA CROP can be used in Hydroponics and Soil conditions. So for your situation you are OK using these types of products in your outdoor mix with your other amendments. MEGA CROP has a higher K ratio so probably the bud weight and end results will be better, Cannabis needs more K than N especially in Flowering.

Good luck to you! I am sure you can grow some great plants with your setup, a lot of full organic growers get some amazing outdoor results too without using any salt nutrients!

[Northern_Loki]

I have not run a full cycle with Megacrop so I’m basing this comment on the materials listed on the ingredients panel along with the PPM calculator on their website. But, I am currently using it on a variety a plant species this season and am looking forward to the results. So, you can expect some confirmation bias here .

With the inclusion of what appears to be quality components including the use of magnesium nitrates, amino acid chelated micronutrients, chitosan, vitamin complexes, amino acids, etc the Megacrop really is a full spectrum fertilizer. They appear to be using the better, more plant available, nutrients. I haven’t seen a single product like this on the market from other manufacturers. You would have to buy several additional products from other manufacturers to match it.

It’s a fixed ratio so if you are used to adjusting your NPK ratios through the growing season, I could see where it would become more cumbersome to figure out where things are. And, this might not be optimal depending on the growing style and media. Maybe you don’t need or want the organics. And, pushing the ammonium ratios (i.e. urea) is not always a bad thing, depending. nitrogen_form.pdf

I have in the past purchased each of the components (in relative bulk quantities) that they are using in their formulation with the exception of the amino chelates (have DPTA, EDTA). And, I have calculated the run cost. I will comment that you might be able to formulate a similar mixture at around half the cost at the current 21.7lbs price but I’d also be ignoring the cost of the labor, equipment, packaging, the more expensive chelates, the specialty items (to include the chitosan, vitamins, and amino acids), and the profit margin.

For what it is, I find the formulation to be good, with unique features, and I personally don’t find the pricing to be out-of-line, rather inexpensive, at the larger quantities.

[Calyxander]

@GreenleafNutrients

Our 21.7lb bag i

I have no use for 21.7 lbs of any fertilizer.
LOL…
Way too much, I grow primarily for my own consumption and amusement!

Your comparison is somewhat disingenuous, because bulk prices will always be lower… the 1.35 lbs Mega Crop is the only valid product size to compare to the Jack’s 1.5 lbs
So the Mega Crop cost is $23.13 per lbs compared to the $12.96 per lbs for Jack’s.
And remember that I need to use a little more than twice as much Mega Crop to keep my plants vibrant and green.
I reiterate that Mega Crop is a great plant food, but whether it is truly any better than the Jack’s (even at the same price point),
I have yet to determine with finality.

[Kraven]

I’m confused here with peoples results…me and few friends switched awhile ago and it is very simple, plug and play and has not dropped my game any, in fact it may have upped it some, but time will be the judge. I simply use EXACTLY what the calc says on the web site though I may up it by 5-10% for flower but tbh its spot on in veg and I’m am really enjoying not having to do chemistry every-time I mix nutes…so y’all can fuss and thats OK, if you want to see real world results feel free to drop by my thread. BTW for $64.00 US I can make close to 2000 gals of nute solution for 2/5th the cost of what it took to make 1000 gals with the nutes I formerly used…Unless Mega crop really fucks up bad…this will be my plug and play solution…period.

The Bunker

[anon32470837]

I love Mega Crop, but I have to agree with @Calyxander that the 21 pound size is way too much for me and how I grow. That amount would last me maybe 16 years at the rate Im using it now.

But cost isnt really an issue for me. I can buy the 610 gm size for $25 and that will last me for 3 runs in my hydro setup which is a years worth of growing for me. Thats less than $3/month or $10/grow - which I can easily afford. Its a relatively small cost in my grows.

[Calyxander]

If I were to grow hydroponically, Mega Crop would be my 1st choice.

However, I grow in smallish containers with soil less mix outdoors, and have used Jack’s as a stand alone, start to finish, single nutrient for many nice crops prior to my testing of the Mega Crop.

For my specific type of growing Jack’s works very well, and is easier, because I do not have to mix as much with water.

[Northern_Loki]

@Kraven

…I’m confused here with peoples results…

I don’t think anyone is experiencing bad results, per se. The plants I have with the MegaCrop appear perfectly healthy. Just some differing experiences and thoughts going on…which are interesting. Helps everyone figure out their individual situation. There is no bashing that I can see. Maybe a different thread so we are not clogging this one up?

[ryasco]

@Northern_Loki

Maybe a different thread so we are not clogging this one up?

The title says discussion for anything about Mega Crop so i believe it is fine.

[Kraven]

Oh no this is the right spot, just weighing in with my thoughts too

[Morgwar]

I haven’t flowered yet with it but so far it’s running perfect.
I’m seeing it as bridge between new and old soil batches while they’re being reamended and cooked and also maintaining my mother plants.
I’m not ready to give up my living soil for it but it’s got a place in my garden.
The price is on point.

[Howard.Crane]

@Kraven

I’m confused here with peoples results…

I really like Megacrop for the most part, and my last run was start to finish nothing but MC and Epsom the whole way. The final product came out great, at least on par with what I would expect from past results with Jack’s, etc. My only issues were the sediment, which is apparently not universally experienced, and the mag being too low for DTW coco with LED lighting (also not universal?) and needing to add epsom to compensate.

I expect to end up using all 20+lbs eventually, lol.

Been following your thread and enjoying it, btw…

[oleskool830]

I love this stuff. My last grow was MegaCrop (some additives) from start to finish. The only negative thing I can say is it smells like shit. I am all in and plants are happy. I use 5 gr per gal from 2nd set of leaves till flip. Then creep it up through flower. I do think I will flush a little more this time.

[Northern_Loki]

After spending several days sitting in the greenhouse, I’ve come up with this oddly pornographic photo :

haha. This is percipitate from a 3 gallon bucket of solution that was started with an EC of 1.7 and PH of 6.3 in a closed container subjected to light and warmth for approximately three days. No circulation, stagnant, enclosed container. I’m guessing that precipitant may be similar to what @Howard.Crane has noticed in his system.

I wouldn’t call this “scum”. It is very light and airy and does not adhere to the walls like a bio-film might. Easy to clean. No off smell. It appears to be organic matter that has congealed and precipitated from solution.

Additionally, there was a thin film that had formed on the surface of the solution:

I was expecting this but I could not tell if this film was biological in nature. It looks almost as though it’s mineral in nature and may have formed, in part, due to the noted stratification and PH differences. I don’t know, need thoughts on what this may be. Again, no off smell:

As noted, this tends to confirm what a couple of others may be seeing. In my case, the precipitation did not appear to be a bio-film, it was not slimy to the touch, it did not adhere to the container, it was light and easy to agitate, it was not difficult to clean, no notable off smells formed.

Test completed.

[Howard.Crane]

@Northern_Loki

After spending several days sitting in the greenhouse, I’ve come up with this oddly pornographic photo :

haha. This is percipitate from a 3 gallon bucket of solution that was started with an EC of 1.7 and PH of 6.3 in a closed container subjected to light and warmth for approximately three days. No circulation, stagnant, enclosed container. I’m guessing that precipitant may be similar to what @Howard.Crane has noticed in his system.

I wouldn’t call this “scum”. It is very light and airy and does not adhere to the walls like a bio-film might. Easy to clean. No off smell. It appears to be organic matter that has congealed and precipitated from solution.

Additionally, there was a thin film that had formed on the surface of the solution:

I was expecting this but I could not tell if this film was biological in nature. It looks almost as though it’s mineral in nature and may have formed, in part, due to the noted stratification and PH differences. I don’t know, need thoughts on what this may be. Again, no off smell:

As noted, this tends to confirm what a couple of others may be seeing. In my case, the precipitation did not appear to be a bio-film, it was not slimy to the touch, it did not adhere to the container, it was light and easy to agitate, it was not difficult to clean, no notable off smells formed.

Test completed.

Yes that looks very much like what I have been getting, and your description matches also except that over time it does cling to the walls. It’s always easy to clean, and does not feel like a biofilm. I have been getting it even with pretty decent aeration, though. That area does tend to be warm, averaging around 75F this time of year.

My latest experiment involved wrapping the rez in Reflectix, and so far after three days I haven’t seen any of that stuff. I’m very encouraged by that. If that turns out to be the key, then it apparently takes very little light.

Thanks for the test and for reporting your results!

[Justiceman]

Hi @GreenleafNutrients is it possible to make a concentrated stock solution? I heard that it is harder to make a consistent balanced solution only weighing 2-6g at a time because of the varying particle sizes in MC. I mainly mix my nutirents in 2.5 gallon increments but I want to be consistent.

I came up with this and was wondering if MC can be used at this concentration.

150g MC to 1000ml Distilled/RO = .15g per ml

15ml(1TBS) = 2.25g
20ml = 3g
25ml = 3.75g
30ml(2TBS) = 4.5g
35ml = 5.25g
40ml = 6g

[GreenleafNutrients]

exactly, this is what we recommend.

Your math looks pretty good too!

[Justiceman]

Thanks for the speedy reply! Loving the idea of a 1 part nutrient with the occasional PK boost if needed.

I’m going to try MC in coco as that is my favorite medium to use.

[Mr.Sparkle]

Well all my samples and testing came out the same way, but a light dusting on the bottom , if shaken rubbed or swirled it would clump together slightly just like your pictures, the ones with the swab of previous sediment/res scum clumped a bit more, but would make sense if anything was growing in there “diatoms” but yeah just sediment.

[KingGhidora]

@GreenleafNutrients

There are organics in MEGA CROP, they are water soluble and will not clog drippers or lines, but in stagnant water they tend to fall to the bottom layer of solution because they are heavier.

This might be what Howard is talking about. If you are very worried about it you can use a filter bag.

Do you see any reason why this bag wouldn’t work?

Amazon.com: Nylon Brew Bucket Filter Bag- Fine Mesh: Beer Brewing Strainers:...

[GreenleafNutrients]

looks good!