Rust Spots mid-flower

[Proph]

Cool cool. I’ll just hit with some water for a few days. Someone told me early on when I bought my hlg that I’d inevitably need to add calmag to my feed. So that’s what I did. Maybe a no no.

And what is it about 6.3 pH and 800 ppm that sounds like serious problem?

Thanks all

Nothing about that "sounds" like serious problem.. The part that sounds serious is the addition of calmag every other feeding.. Again, too much of one single nutrient ( like calcium) will lock out others making the locked out nutrient unavailable to the plant.. Too much calcium locks out magnesium making magnesium unavailable to the plant.. Even though there is enough magnesium in the soil ( you know this because you're adding it every other feeding), the plant can't use it because of the presence of too much calcium.... That's when the plant starts showing signs of "magnesium deficiency".. But in reality, it's actually a magnesium lock out... Same for too much magnesium.. That will lock out calcium making it unavailable to the plant.. That's why it looks like you have a "calmag" deficiency.. Because they are actually locked out due to excess..the lower the ppm, the better the odds of the nutrients being at the correct levels to keep things in balance.

 

[Proph]

This is the excess nutrient chart I used when I first started learning how nutrients work..

Ph and ppm are two totally different things and aren't really related. pH is a measurement of how acidic or alkaline (basic) a substance is. Ppm is a measurement of the mass of a chemical or contaminate per unit volume of water.. Or how much nutrient is in your water....

 

[pg2052]

Yeah I get that. I was just curious what Low and Slow was referring to:

“If you're getting 6.3 runoff in the 800's, something is SERIOUSLY wrong in the root zone.”

 

[pg2052]

That chart is awesome - thanks for sharing.

 

[Mañ'O'Green]

Yeah I get that. I was just curious what Low and Slow was referring to:

“If you're getting 6.3 runoff in the 800's, something is SERIOUSLY wrong in the root zone.”

@pg2052 Welcome to AFN. I am running GreenLeaf Mega Crop 2 Part nutrients in a rock wool drip system for the first time for Autos and I am being very precise with my PPMs and balance of nutrients. Not counting my starting water I am getting nutrient burn and problems over 500 PPMs. If your run-off is over 800 that is a problem of being too high for autos. OF is a highly amended medium and some of the amendments will be long lasting others not so much. When you flushed you flushed away the more soluble nutrients but this does not lower the other durable elements. This makes it very difficult to get the balance back in the pot because you simply do not know what to add back. Right now you have too much. so follow what @Proph is telling you.

 

[Proph]

Yeah I get that. I was just curious what Low and Slow was referring to:

“If you're getting 6.3 runoff in the 800's, something is SERIOUSLY wrong in the root zone.”

I'm not familiar with that quote about slow and low.. Who said that?

 

[pg2052]

@pg2052 Welcome to AFN. I am running GreenLeaf Mega Crop 2 Part nutrients in a rock wool drip system for the first time for Autos and I am being very precise with my PPMs and balance of nutrients. Not counting my starting water I am getting nutrient burn and problems over 500 PPMs. If your run-off is over 800 that is a problem of being too high for autos. OF is a highly amended medium and some of the amendments will be long lasting others not so much. When you flushed you flushed away the more soluble nutrients but this does not lower the other durable elements. This makes it very difficult to get the balance back in the pot because you simply do not know what to add back. Right now you have too much. so follow what @Proph is telling you.

Hey thanks for welcoming me! I think one of my problems has definitely been that I’m getting a lot of conflicting info from various sources, so it’s hard to figure out what’s what (and as a noobie I haven’t a clue myself). For instance, when I flushed a couple weeks ago I did so because I was having issues with a different plant and it was suggested that I was crazy for having not flushed yet with fox farm nutes. So I flushed and now I’m having these new problems. ‍

You fine folks here seem to know your stuff, so I’ll go straight water for a bit and see how we’re doing

 

[pg2052]

I'm not familiar with that quote about slow and low.. Who said that?

Just someone that was replying to you on page 1 of this thread

 

[low_and_slow]

I grow hydro, usually run a full cycle at or below 600ppm in my solution. When it goes in, some amount of the ppm remain in the root zone, some salts dissolve and rinse out, and ultimately the runoff is the same or less as what I pour in.

Generally the pH of the runoff is the same or slightly more acidic than what I pour in.

If you're in the 800s with a sick plant, you have very hot medium. If your runoff is the same or more pH than what you pour in, you have high pH.

Those are the problems I referenced...from here, consider your soil "fully charged."

Feeding only pH adjusted water will allow you to see where things are trending, then only add more if and only if you see clear signs to do so.

 

[pg2052]

I grow hydro, usually run a full cycle at or below 600ppm in my solution. When it goes in, some amount of the ppm remain in the root zone, some salts dissolve and rinse out, and ultimately the runoff is the same or less as what I pour in.

Generally the pH of the runoff is the same or slightly more acidic than what I pour in.

If you're in the 800s with a sick plant, you have very hot medium. If your runoff is the same or more pH than what you pour in, you have high pH.

Those are the problems I referenced...from here, consider your soil "fully charged."

Feeding only pH adjusted water will allow you to see where things are trending, then only add more if and only if you see clear signs to do so.

Got it - thanks!