Best NPR ratio
- Thread starter olimmilo
- Start date
Figong
Well-Known Member
Do you mean NPK? And ratios depend on the strain and conditions.. some love heavier N, some more P, others want an assload of K.. not factoring the trace elements. Would just pick up enough to mix your own, and slowly work through what your plants want.. dial in your grow, and go to town. Make sure you do the math twice for every mix, so if you mis-calculate you don't spike it with potentially toxic levels of certain elements that can lock out others independent of pH.
Figong
Well-Known Member
Highly recommend a 7-3-5 NPK for veg growth, and you can tinker it a bit until you see exactly how your plants respond and what they need/want/ask you for by displaying it in the leaf deficiencies/tox/etc. Is how you get to know the strain you're growing and is also why I recommend that for first grows, the grower sticks with the same grows so they understand the symptoms, what to look for, and how to fix it.
Figong
Well-Known Member
For flower, I'd go with 3 different mixes, only because I'm extremely picky.. but you can't really fail with a 1-1-2 for mid to late bloom. After looking at my Veg answer for you.. given that you don't run the setup or strains that'd benefit greatly from that, you may want to change the veg to a 3-1-2 or a 4-1-2.
When mixing P and K, the P-K ratio is always 1:2 no matter what #s you pick for it. If you wish to play with the Lucas formula, that's always an option too.. and there's detailed info on the lucas formula here: https://www.rollitup.org/hydroponics-aeroponics/4387-lucas-formula.html .. if you do go that route, make sure you read through all of it as some of the calculations they gave got changed after re-discussion in later pages.
When mixing P and K, the P-K ratio is always 1:2 no matter what #s you pick for it. If you wish to play with the Lucas formula, that's always an option too.. and there's detailed info on the lucas formula here: https://www.rollitup.org/hydroponics-aeroponics/4387-lucas-formula.html .. if you do go that route, make sure you read through all of it as some of the calculations they gave got changed after re-discussion in later pages.
Figong
Well-Known Member
Was trying to recommend something that if run at higher strengths, it wouldn't be 1/2 as dangerous - is why I'd adjusted my numbers.. but could see any/all recommended working just fine so far.
jondamon
Well-Known Member
Wasn't trying to shoot you down, no need to defend your recommendation.
My honest answer is that anything can work as long as its handled correctly.
Less is more as far as nutes are concerned.
J
Figong
Well-Known Member
Just figured I'd clarify.. no offense was taken - rest assured =)
jondamon
Well-Known Member
No worries. Lol.
Incase anyone wonders, the 6-3-8 I use is CANNA AQUA VEGA great great nutes IMO.
Its an A and B formula for recirculating hydroponics. But it works wonders in any other medium. I currently use coco on a drain to waste hand water.
I prefer using these because I know the products and only use a handful that I think are worth the money and that get the job done.
I've seen people using a basic big box store 5-5-5 own branded ferts with seaweed extract.
Like I said its the hands that hold the tools that are usually the issue with nutes.
J
farmerman421
Member
These are great replies, can i ask anyone the numbers they shoot for on calcium and magnesium?
Figong
Well-Known Member
During the first 2 weeks of bloom, I'd run 100-200ppm equiv of the cal/mag... as for other times, I watch the plants... that time is critical given what the cal/mag does to help nudge the fast division of cells.. and would also run a higher dosage at 4-6 weeks into flower just the same - as for other times and exact amounts, the idea is that they're trace.. so very low in comparison to the NPK as an aside.
HeartlandHank
Well-Known Member
3-1-2 is my preferred ratio. It works very well from seed to harvest for me.
thecoolman
New Member
jondamon
Well-Known Member
farmerman421
Member
Why do commercial growers opt organic? I thought hydroponics was the holy grail of big yields.
farmerman421
Member
Also, Id like to clarify. These numbers are N-P-K ratios correct? Not grow-micro-bloom? After crunching the numbers, I see large variations between lucas formula, useless formula, GH feed chart, Mel-Franks, and ph imbalance.
Mel Franks intense light is pretty close to 7-2-5. pH imbalance is closer to 5-2-4. Both have specific numbers for the first two weeks. Lower in nitrogen and higher in potassium. Does anyone use different numbers for the first two weeks after transplanting clones?
pH imbalance also has really high magnesium for the first two weeks (175). Mel Franks is only 50.
Mel Franks intense light is pretty close to 7-2-5. pH imbalance is closer to 5-2-4. Both have specific numbers for the first two weeks. Lower in nitrogen and higher in potassium. Does anyone use different numbers for the first two weeks after transplanting clones?
pH imbalance also has really high magnesium for the first two weeks (175). Mel Franks is only 50.
HeartlandHank
Well-Known Member
Commander Strax
Well-Known Member
I like "Car Talk" on saturday afternoon... oh wait you said Ratio not Radio.