For Those Of You Using Jack's Fertilizer

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Shawnery

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I'm using something similar in terms of dry nutes for hydro called Masterblend 4-18-38.
I use it with cal/nit and Epsom salts at a mixture of 2/2/1. From the research I've done on Jack's it seems most people are running it at 3/2/1.

I understand the two fertilizers have different ratios of minerals but in theory wouldn't their ratio of fertilizer to cal/nit and Epsom salts be the same? Obviously everything else in a given situation would have to be similar as well I assume.

Do you think I should stick with my 2/2/1 or switch to 3/2/1?

If anything was lacking in my 2/2/1 solution compared to the Jack's 3/2/1 solution, what might the symptoms be visually or in plant growth?

My plants did well but they could have done much better and I was thinking this might be an issue to look into.

Thanks!
 
JWM2

JWM2

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The difference is a little bit of nitrogen. If the leaves start yellowing then you can hit them with a bit more nitrogen but otherwise it shouldn’t make much of a difference. If you find you need more nitrogen then switch. With nutes you’re going to have to find a ratio that works for you in your growing conditions. Everyone has a slightly different environment and thus their plants will require slightly different feeding regimens. Find what works for you then stick to it.
 
S

Shawnery

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I've always looked at it as a rule in terms of ratios to each other per gallon. I'd never even considered switching a little here or there. Honestly fert is one of the things I've not really looked into. So if I need more nitrogen than I would increase the cal/nit since I dropped it during flowering?
 
RooR5mm

RooR5mm

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Quit using the Epsom salt and see if the plants still need the extra shot of MG.
I just use jacks hydro and calnit. Why waste the ppms with the salt if you don't have to.
 
S

Shawnery

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Not arguing! Discussing!

Every single grow I've seen uses Masterblend at a ratio of 2/2/1 with Epsom being the 1. Most of these grows appear pretty nice. Not saying you're not right I'm just asking for better clarification.

I was under the impression that cannabis is an MG fiend and requires large amounts to in comparison to other plants. If I was to stop using the Epsom salts than where would my girls get their MG?
 
xavier7995

xavier7995

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Looks like that is a difference between jacks and what you are using. Jacks has quite a bit of mg in it, 6% i believe, vs. .5% in masterblend (assuming i am looking at the right stuff).
 
sixstring

sixstring

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The difference is a little bit of nitrogen. If the leaves start yellowing then you can hit them with a bit more nitrogen but otherwise it shouldn’t make much of a difference. If you find you need more nitrogen then switch. With nutes you’re going to have to find a ratio that works for you in your growing conditions. Everyone has a slightly different environment and thus their plants will require slightly different feeding regimens. Find what works for you then stick to it.
best nute advice i have read in a while :happy:
 

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