I don’t have an exact amount of that, but with higher concentrations the Calcium will not be as soluble in concentrate form because it will turn to gypsum. You can mix them like this, and when you feed and eventually dilute to give to the plant normal dosage, the undissolved gypsum (white substance) will dissolve again, although it can take 1+ weeks and its a slow process.
So we recommend for the 1 part to just add the intended dosage each time to the final reservoir at the concentrate you would feed the plants, which will mostly avoid gypsum formation. You can do methods with higher concentrations, but if you are looking for super precise dosing then this is not the best way. The Mega Crop 2 part was more designed for concentrated dosing because the Calcium and Magnesium/Sulfur are separated.
edit: as a small note, in 2024 we are going to some some slight adjustments to the Mega Crop 1 part to make it more soluble for this type of concentrated method. It would still be able to be used the same, but a little more friendly towards concentrated feeding (this will be accomplished by reducing the sulfur, as we have an over-abundance of sulfur currently. Cannabis doesn’t need that much sulfur).
Just taking a normal scoop should be pretty even unless you are doing very small doses (like 5-10g only at a time). In which case if you want to ensure a more precisely even mix, you would take bigger dosages and you could dissolve it. For example you could do 10x dosage in 1 Gallon jug. So if your normal dose is 5g per gallon, you could do 50g per Gallon in a jug and premix. Then this gallon just would represent a 10x dosage. So if you needed “5g of fertilizer” you would use 1/10th of the Gallon size, which would be 128oz/10 = 12.8 oz, or 378ml. (Because 1 Gallon = 3780ml total.)
Obviously when making a concentrated dosage, you should make sure to stir/mix before using, to make sure the liquid is even.
If you give me a little more details about your exact growing media and dosage size you use each time, I could give some precise examples.
true, but not exactly true. MC “sludge” will be a combination of organic heavy particle ingredients (Kelp/Seaweed/Fulvic/Humics), and gypsum. Gypsum is soluble in water, but its just slowly soluble (could be 1+ weeks). So obviously for an aeroponic system this could cause problem, or even a rockwool top trip. But for a soil or coco grow, everything should eventually dissolve and be usable over time.
Just to clarify would you be implying that eventually there will be a reformulation to allow one to make a concentrated premix kinda like what athena is doing, which imo is a good thing for consistency.
can you direct me specifically to what Athena is doing that you are referring to? MC originally was 1 part soluble, but you have to compromise on a lot of ingredients that Cannabis needs so we adjusted it.
afaik, Athena has a 3 part powder Pro line, and a 4-part liquid line.
Shelf life is not an issue. You can make a liquid solution, but dedicated liquid 1-part solutions (like Dyna-Gro or Flora-Nova) usually act as good approximations, but are missing some ingredient or have proportions wrong.
Just there proline kits and in order for them to get around batch to batch consistencies being able to mix up a full bag into gal jugs for concentrate sake.
Mind you saying that them doing so and being 2-3 part mixed they can keep that calcium and sulphur separate to avoid drop out, where one parts you cant really do that.
I’ve used the one part a few times in the past. It’s amazing if your watering stuff by hand. I grow using autopots and megacrop causes the valves to stick so I had to move back to a salt based nutrient to eradicate that problem. I’ve still got some megacrop remaining ill use outdoors on my autos come the summer.
I’ve used 1 part MC for a few years now, and did at least one full grow using a concentrated solution, shaking it up each time, and feeding by ppm. Plants grew okay but did exhibit various deficiencies in flower.
Bought a gram scale and moved to weighing each batch (I use rockwool and a central res) and honestly my plants have performed better. YMMV, but the gypsum explanation above makes sense in that with rockwool, I need everything to be available when I feed, not in a week or 2.
There lay a lot of my problems haha. I’ve only used MC once, and it was in a coco solo cup grow, and my first time in coco. Everything was going well, but as the plants grew, and irrigation frequency rose, I also ramped up the feed and smoked em. I ended up cutting way back to around 2gm per gallon, and it was hard to not just get just dust or just bits. I ended up mixing a batch that was like 2000ppm and cutting it to make weak feed. I was just being a cowboy though, so I’m happy to know I wasn’t totally pooching it. Not with that part anyway, there was plenty of other pooching afoot, I assure you haha.
My next grow will be in 1 gal grow bags with coco:perlite 3:1. Plants will be flowered small and grown under 25 watts per sq ft of led. I would expect to water daily. So, I imagine the lower end of the standard feed chart?
Thanks, man. I seemed to have set my own bar high. I hope I can pull another off as tight. Megacrop don’t fail me now. Oh, and I always supplement with alaska fish ferts. That’s how I get that lush almost neon green
That stuff works. Never burned a plant with it. I’m sure it will. The first time I used it I was very impressed. This was over 30 years ago. The bottle had a different label.
Definitely smells like fish.
I start slow with my supplement of it in my 30-gallon pots of coco. Max, I go 3/4 tsp per gallon of it with a regular nute feed. On every other full feed.
If I’m reading correctly, it’s saying i need 4.5g/Gal Calcium Nitrate during bloom? Currently I have been using 1.5g/Gal with zero yellowing in the past 3 grows.
Sorry if I’m missing something, I just want to make sure I’m not underfeeding my girls!
Thank you @GreenleafNutrients
hi, the 2 part is customizable. If you are getting results with what you are doing, then just continue. The website has a feeding chart that is a little more updated compared to the bag.
I feed a pinch of part a. Double pinch of part b and when I feed, to every gallon in soil. This stuff does wonders. I’ve dialed it down to where I like the effects I get. I do this every week. Seems to work for me. I’m on 3 years for the two jumbo bags I bought…I was getting burn at the recommended level of feeding so I just dialed it back…
