How easy is it to overfeed and how much should you feed ?

[Alien GreenThumbs]

So how do Bottled Nutrient Companies determine these amounts? Nutes were started long ago for indoor growers using 1k watt hps hoods, not for outdoor vegetables. There were no leds or par meters or ppfd yada yada. How did indoor nutrient companies making nutes specifically for weed determine doses or start with a control sample? It had to be what was mostly used at the time. Yes lights have come a long way and power consumption has been lost in translation, but there had to be a control of some kind. Most yields are based on a square meter right? So 1k watts in a square meter sounds like a control to me, we just need pot size. Even though lighting has changed, you really think nute companies will change their labels? No! They want you to use too much and keep buying more thinking you need it. Thats why almost all labels show feedings weekly. They know the average grower will use the product every week or try to. Sorry for the rant...i had a bowl and coffee and im ready to take on the universe. I apologize

 

[Alien GreenThumbs]

I really want to know how they figured these numbers now, if anyone finds anything please link me, im in the mood for a long read. Thanks

 

[LeastExpectedGrower]

I really want to know how they figured these numbers now, if anyone finds anything please link me, im in the mood for a long read. Thanks

It would be interesting to know...Also at the very least, the GH Trio charts have been updated and changed along the way, so there's some kind of something at work. They also have aggressive/medium/light schedules and pin different growing conditions/systems on those. I'm not sure if a lot of people who use them bother to look on their website, vs. what's on the bottle, which when I looked at mine, was well out of date from the PDFs.

 

[PopAndSonGrows]

I mean, to that degree, how do you ever know if ANY product is listing the true N P K values. How do i know my wife's diamond wasn't grown in a lab? WHYS THE SKY BLUE, lol.

How do they determine the numbers, you mean? --probably through testing, similar to how you rely on meters to determine your PPM or pH, they probably have "meters" for N P K values.

 

[hotrodharley]

The nutrients were formulated for hydro. Not for soil. Amounts have been determined through chemistry, biology and experience. Same with predicted maturation dates. All based on the experience of experienced growers.

 

[Alien GreenThumbs]

I mean, to that degree, how do you ever know if ANY product is listing the true N P K values. How do i know my wife's diamond wasn't grown in a lab? WHYS THE SKY BLUE, lol.

How do they determine the numbers, you mean? --probably through testing, similar to how you rely on meters to determine your PPM or pH, they probably have "meters" for N P K values.

Agreed, but then that just tells me all nutrients are the same thing. Testing has to have control subjects otherwise whats the point of the tests.

 

[PopAndSonGrows]

Agreed, but then that just tells me all nutrients are the same thing. Testing has to have control subjects otherwise whats the point of the tests.

That is widely debated and generally speaking, plants don't know if nitrogen is coming from a fancy bottle or from you peeing on it. N is N, P is P and K is K as far as the plant is concerned. BUT, it's the abundance of "micronutrients" that separates organic from bottled/mineral based nutrients, and therefore likely more/better flavor.

 

[myke]

Back in the day bottles recommend mix usually came out to 1500 ppm.Not sure if that still hold true.
Somebody way back figured 3EC was the max? Not sure.

 

[Alien GreenThumbs]

The nutrients were formulated for hydro. Not for soil. Amounts have been determined through chemistry, biology and experience. Same with predicted maturation dates. All based on the experience of experienced growers.

This^^^ ok i believe some of this to be true also. But they still needed Light in the equation. How much did they use over hydro back then? 600w or 1k, pick one. That has to be how the values were determined...effin Sativa has me on ghost hunt for no reason!!!

 

[twentyeight.threefive]

If twentyeight used any more than 600 watts. Than its watts related. I heard nute bottle labels are based on certain size containers under 1k watts. We as growers have to break that down to what ever we use accordingly. So if you run a 1k watts, at some point you could be full strength nutes around 1000ppms. Less watts, less ppms. But what do i know? Im spitballing here...but it makes sense, you ran 675, feeding 600-750. Close enough

They were at 650w most of flower and turned up to 700w for a bit. They didn't like the extra wattage and started foxtailing.

They were girthy autos, like all my plants. Same under various lights. "800w" blurple, 200w SF2000, and my Timber Fatty.

 

[lusidghost]

Oh I haven't had issues running 750ppm-800ppm.

I thought you fed your plants super lightly. Like 1.2 or something close.

 

[twentyeight.threefive]

I thought you fed your plants super lightly. Like 1.2 or something close.

Last photo run I finished in 1 gallon pots were maxed out at 1.2 EC. They wouldn't have taken more with once a day watering. They were pretty much bone dry after 24 hrs.

 

[Alien GreenThumbs]

Thanks for chiming in again twentyeight. Seems very close in terms of wattage used. You used a bit more, fed a bit more nothing drastic. Least expected used a little bit less watts and pushed limits.

 

[twentyeight.threefive]

Thanks for chiming in again twentyeight. Seems very close in terms of wattage used. You used a bit more, fed a bit more nothing drastic. Least expected used a little bit less watts and pushed limits.

Wattage doesn't mean much without reference to grow area. 650w is a lot for a 2x2 space but not so much for 20x20 space.