Gond00s
Well-Known Member
plants are liking it just feeding water atm
Mega Crop 3.o is shipping, also Mega Crop Part A and Part B
- Thread starter DCcan
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Mikenike
Well-Known Member
How do I get some free shit? I get great results with Megacrop and Epsom salt. Their newest formula looks so much better but for me, I’m having some undissolved sediment, looks like some black kelp flakes and some white silt looking stuff. I’ve never had any issues before with their other formulas tho. I’m a little over halfway thru my jacks run and it’s looking great too, have to up the Epsom tho. Got the new 2 part Megacrop as well that I’ll probably try next
The undissolved sediment people are mentioning; is this from the new "One Part", with all the 'additives' in it? Just wanna make sure.. because none of that stuff is present in the "Part A" (Part One).
Attikus112
Well-Known Member
I'm assuming those complaints are about the new one part mix. I've been playing with the two part and i don't see any black flakes and there doesn't seem to be any sediment formation.
I can't say too much about the two part formula performance yet. I have one plant about a week from harvest and another that's in veg but it has been a real pain in the ass since day one. Seem to have issues with every brand of fertilizer i through at it. I did feel like the Mg was a bit low with their early veg schedule (25ppm) so Iadded some Epsom but that was in response to what looked like a deficiency. The issues I'm seeing might just be strain related, it's my first time growing this strain.
I should be starting some GDP soon so I plan on running the two part with that from start to finish, hopefully it isn't as big of a pita as the cali orange I have in veg now.
Mikenike
Well-Known Member
Yes the sediment is from the new one part. The two part is great. Crystal clear water and no sediment at all. The two part is missing kelp and chitosin compared to the one part. I will be using the two part exactly like jacks and see how it does. Jacks even has a slight red/orange tint to it where Megacrops two part is literally crystal clear
Cool. Should be a good comparison. The MC Part A only has silica added, and all the micro nutrients are still amino chelated. From what I see, those are the differences (along with upped % of a several elements).
Sounds good man.
I'd like to order some but I wanna hear some experiences first, that's all.
Thanks.
DrKiz
Well-Known Member
I'll let you know, mixing up a res with it the first time tommorrow. It's the new two part Mega, not Jack's though.
Does the two part, part A have calcium in it?
It's not on the label as far as percentages, but in the list of ingredients I see calcium mentioned. Anyone know how much the part A has for calcium alone, or none at all?
Attikus112
Well-Known Member
I asked greenleafnutrients if part A contained calcium and their response was "not much". So an incredibly vague response, but it sounds like it's probably insufficient to grow with without an alternative calcium source
DrKiz
Well-Known Member
Mixed up a res. Haven't got to watch it yet for a couple of days, but first impressions:
Part A: Fine white powder. Dry, not clumpy. Really didn't notice any odor or dust.
Part B. Little white balls. Just lil tiny white balls.
Part A.. threw it in the res... 75% dose. (Flowering dose). About 150 grams.. walked away and let the pump churn. Came back 5 minutes later and it was all disolved and the water clear.
Part B. Thew it in at 75% flower dose... about 75 grams... walked away and came back to a clear res, no sediment. No smell.
Came out to PH 5.6 and EC 1.2/1.3 (Pen VS Bluelab Gaurdian) at 75% flower dose in RO water.
Bumped up the PH to 5.8 and we will see how the plants respond over the next few days.
I was running Megacrop V2 till now with a few additions. This res is Mega two part only.
I'm curious if I'll be able to feed higher with a better balance of NPK for flower.
EDIT: This is for a 55 gallon reservoir. About 200L. I would have to use 800ML of Advanced Nutrients Part A AND another 800ML of Part B for example to mix the reservoir according to instructions. So about $40-$45 CDN. Plus Rhino skin $10.
For Mega 2 part i would use 220 grams of part A and 100 grams of part B according to instructions. Each 25lb bag of Mega was around $100 CDN. You can do the math.
I am the consumer who absolutely refuses to use bottled nutrients for my main fert.
Part A: Fine white powder. Dry, not clumpy. Really didn't notice any odor or dust.
Part B. Little white balls. Just lil tiny white balls.
Part A.. threw it in the res... 75% dose. (Flowering dose). About 150 grams.. walked away and let the pump churn. Came back 5 minutes later and it was all disolved and the water clear.
Part B. Thew it in at 75% flower dose... about 75 grams... walked away and came back to a clear res, no sediment. No smell.
Came out to PH 5.6 and EC 1.2/1.3 (Pen VS Bluelab Gaurdian) at 75% flower dose in RO water.
Bumped up the PH to 5.8 and we will see how the plants respond over the next few days.
I was running Megacrop V2 till now with a few additions. This res is Mega two part only.
I'm curious if I'll be able to feed higher with a better balance of NPK for flower.
EDIT: This is for a 55 gallon reservoir. About 200L. I would have to use 800ML of Advanced Nutrients Part A AND another 800ML of Part B for example to mix the reservoir according to instructions. So about $40-$45 CDN. Plus Rhino skin $10.
For Mega 2 part i would use 220 grams of part A and 100 grams of part B according to instructions. Each 25lb bag of Mega was around $100 CDN. You can do the math.
I am the consumer who absolutely refuses to use bottled nutrients for my main fert.
Last edited:
DrKiz
Well-Known Member
Thank you, I figured as much.
Gond00s
Well-Known Member
had a minor soil ph problem but I got them back on track so just keep a look on soil ph mine dropped from 5.8 to like 4.9 once I noticed I hit my soil with 7.3 and now its back up to 5.9 so idk if it was me that caused the spike which is could have but just letting everyone know,
I meant to say megacrop, not jacks. My mistake.
This sounds exactly like gln.
This "new two part" megacrop is no different than any other "two part", in that the "part a" (the part that is actually the blend that the company is making) doesn't have calcium (calcium nitrate) in it. The "part b" is always calcium nitrate. The reason for this is that nitrates react with sulfates, so all the sulfates are in the part a, and the nitrate(s) are in part b. There shouldn't really be any calcium(calcium nitrate) in the part a at all...
...so it's a little weird that they told you "not much".
You're specifically meant to have to add the calcium (nitrate), and perhaps magnesium (sulfate) on your own. So it's not "missing".
Correct me if I'm wrong on this. All these "two" (or more) part systems are very similar in that. It's separated for chemical, and formulation (ratio adjustable) reasons.
Hey, thanks very much for the feedback.
The "part a" is just calcium nitrate, nothing special. GLN, Jacks, Masterblend - none of them "make" calcium nitrate or anything, it's some other brand/company and it's pretty generic. Jacks (used to?) add color to theirs.
It sounds like you paid about 200% too much though, unfortunately. I saw their prices for "part b" calnit and was shocked. It can be found at a wholesale/bulk garden supply/warehouse or chemical warehouse locally for about $40-60 for 25kg (yea, kg, not lbs). Not to mention the shipping cost you save.
They are all the same, for the same reasons you mentioned, so you are in fact correct, with one correction. It isn't the nitrates that cause the issues, it's actually the Calcium (Ca Nitrate or Ca Chloride etc will have the same problematic effect).
Calcium can't be mixed with sulfates or phosphates, or it'll precipitate, and cause the nutrients to fall out of suspension, making them unavailable to the plants.
Attikus112
Well-Known Member
I paid about $28 to have 2.2lbs of a and b shipped. I think a and b were around $11 each. So i'm not getting the volume discount but it will still probably last me years. For 2.2lbs each of jacks a and b the cheapest i saw was around $50.
Oh, ok. I thought I'd heard an experienced jacks user (I thought it was GG) say the nitrates don't mix with sulfates.
When you say "calcium can't be mixed with sulfates or phosphates", do you mean specifically and only in concentrated form - I would assume. But then I tried to find something discussing this and this fertilizer article was the only thing I could find (in short time) and from reading it - it sounds like you can't mix/irrigate with calcium nitrate or magnesium sulfate with even a "complete fertilizer" so I'm a little confused by that.
Jacks + CalNit + MgSO4 mixes all of these in solution, so I guess you mean in concentration? Maybe I misunderstand the purdue article.
Anyway, I often see white "salt" buildup on the drain holes of planter pots, and wonder if it's because it dries out a little too much between waterings. But when I've checked, it's actually moist - so I'm not sure what's up, or if that's actually calcium sulfate (gypsum) or something like that. Tried adding wetting agents, nothing really helps.
This buildup occurs on trays etc. sometimes, I wonder how to avoid that.
Thanks.
EDIT: article link: https://vegcropshotline.org/article/fertilizer-compatibility/
I'm going to have to look further into the Nitrate and Sulfate thing. I may be incorrect, or have misunderstood something, but one thing is for certain... I'm questioning my understanding.
Either way, I am certain about Ca compatibility.
As far as precipitate, yes, it usually reflects the concentrated forms. However, I mix Jack's 5-12-26, Calcium Nitrate and Cal-Mag into two 15 gallon stock tanks, and if I don't use it quick enough (within two weeks), I start to see precipitation occur, so it does happen even in diluted form, albeit at a much slower rate.
I had the same experience when mixing up a little too much GH Flora in the same stock tanks when I was using that (used it for years, and switched over to powder water soluble nutrients at end of April this year).
DrKiz
Well-Known Member
No problem bud.
I’m liking the Mega two part so far. I didn’t take much risk buying it as it is pretty much Jacks.
Been through two rez’s on the last week. So far so good.
No PH drift, or at least not like the Mega one part that needed PH down everyday. Not this new two part.
Not seeing sediment build up at the bottom or any funk either.
So far so good.
And I’m running 1.3 EC with out build up over the last week. With the one part I’d get build up anything over 1 EC.