mega crop 5 grams per gallon
N 132ppm
P 29 ppm
K 154 ppm
Ca 86 ppm
Mg 25 ppm
so your going to need about 1 gram (1/4 tsp) per gallon Epsom salt to balance it
comparatively
chem grow per gallon
2 grams mix
2 grams calnite
N 103
P 47
K 171
so you can see theres a good degree of difference in the 2 fertilizers with the mega crop have more of a std veg ratio while the chem grow has lower N higher P and ample K... which is generally a bloom mix
I have a few questions if you dont mind.
Do you know what the ppm;s for the MPK is?
You have time to make me a formula using the megacrop for bloom to address the high N? Or something do you recommend I do something different than below?
I started my megacrop flower run the other day. I started with 55 gallons and went by the notion of going by ppm's to get where I wanted to be and that was about 700 ppm;s to start my flower run. So it ended to be about 350 grams of megacrop to do that. So I did that, foliar fed them a kelp and fulvic spray, flooded my pots and then I dip out a few gallons out of my res. added 5ml of the Raw bloom microbes to the 3 gallons and topped off all my pots with that mix. Ok. Then I thought I was done then came online and seen your post above.
Ok so I got freaked out and topped of my rez with 5 more gallons of water to bring the ppm's down since I was scared about over doing it. Then I added 25 grams of epsom salt that same night before the next feeding. I only added the 25 grams so I didnt add too much. I enede up being back at 700ppm's. I dont really have a talent for math/clue with figuring the ratio's out I have always just gone by the H&G feed chart added some things that I thought would help and went for it. I have always understood they like some nitrogen less phosphorous and more potassium. Ok good enough, but it can be better. Im trying to have a better balanced nutrient ratio mix. Adding stuff and getting my nutrients out of balance is my main problem I do believe. So you posted this talking about your mixers
2:1:3 RATIO NPK +/- depending on my mood and stage. 2/1/3/ ok sound reasonable to me
.
So I went to the mega website
https://greenleafnutrients.com/feeding-chart/?v=7516fd43adaa and using the normal feeding chart section there I added 55 gallons and if you do this it says that in late flower I should be only adding 330 grams. Uhhhhh ok? Idk? Seems strange to me.
Then if you go to the ppm calculator I get this. 55 gallons 350 grams.
Element PPM calculation
Total Nitrogen (N)
168.1103
Nitrate Nitrogen (NO3-)
161.3779
Ammonical Nitrogen (NH4+)
6.7246
Phosphorous (P)
40.3488
Potassium (K)
202.3413
Magnesium (Mg)
31.9404
Calcium (Ca)
109.2696
Sulfur (S)
18.4920
Iron (Fe)
1.3451
Zinc (Zn)
1.8489
Boron (B)
1.3451
Manganese (Mn)
1.3451
Copper (Cu)
0.8405
Molybdenum (Mo)
0.1680
Silicon (Si)
1.6810
Total PPM 579.0903
I ended up about 700 ppm;s with what I did, like I said I wanted to be at 700 to start (500 scale) I had about 50 ppm's in my water to start. So add the two together and its 629 my nutrient monitor says 710 ok close enough, were good. (Im ok with the difference in ppm's as my ppm probe may need to have an adjustment. Not worrying about that right now.)
So am I out of balance, where did I screw up?
So if you use the mega feeding calculator why does one say Im maxed out for late bloom at 330 grams, I added 350, and I only had 700 ppm's. Come week five I want to be about 1300 ppm's and that looks like this. And that is 800 grams of megacrop. My gut tells me I want / need less nitrogen for this flowering stage.
55 gallons 800 grams.
Element PPM calculation
Total Nitrogen (N)
384.2522
Nitrate Nitrogen (NO3-)
368.8638
Ammonical Nitrogen (NH4+)
15.3704
Phosphorous (P)
92.2258
Potassium (K)
462.4945
Magnesium (Mg)
73.0066
Calcium (Ca)
249.7590
Sulfur (S)
42.2674
Iron (Fe)
3.0744
Zinc (Zn)
4.2261
Boron (B)
3.0744
Manganese (Mn)
3.0744
Copper (Cu)
1.9211
Molybdenum (Mo)
0.3839
Silicon (Si)
3.8422
Total PPM 1323.6349
I have always fed by ppm's as an indicator of where I needed to be for the plant size and stage of plant growth. Not to be confused with the ratio, I understand the plant wants a certain proper balanced nutrition. I just haven't been exact with that, with my adding this adding that laziness. Thats what I want to dial in. With these nutes it sounds like I dont need to add anything but then again I want to be sure I'm doing it right as I never used dry nutes on this level before.
You know where I'm screwing up??
TIA