Understanding pH runoff - 4 plants, 2 have identical as input, other 2 are at least .5 higher

[Mañ'O'Green]

Canna is a reputable brand as far as I know so the washing is a minor thought. Your water is good with only chlorine for sanitation and low-med calcium carbonate. That really only leaves dosing of the nutrients and PH.

Are you running Canna COCO A&B?

 

[NoFrillsNoBills]

Ok thanks for the education on runoff guys.

As for the nutrients, yes it's Canna Coco a/b. The cal/mag I'm using appears to be the AN CalMag Extra. Should I have gotten a different calmag for future purchases?

I'll back off the dosage and go from 7.5ml/gal to 6.3ml/gal then as suggested. Should I continue the calmag feed at 2ml/gal or drop it to 1ml/gal since the water hardness isn't an issue?

For future grows is there any other nutrient line that would be better to replace or add with? I know Canna has other products but wasn't sure what to get when I first started.

may run out of what I have before this grow is over and my local hydro store looks llike they dont have any more of the canna coco a/b line in stock any more.

 

[Proph]

There is no such thing as calmag... That's a sales term. Calcium and magnesium are two completely different nutrients that do two completely different things. Most people who use the term calmag are actually intending to refer to only calcium. At some point you will need to start the process of learning how to read the plants needs and issues. That is where all your answers will come from. The plant never lies and is never wrong about what the issue is.. While we (humans) on the other hand, are often wrong.

Adding cal mag for no reason, or when it's not needed, is the cause of about 80% of the plant issues on this forum, lol. Most people don't understand the concept of nutrient lock out. They don't understand that too much calcium will lockout magnesium and make it unavailable to the plant. And that too much magnesium will lock out calcium. Or that calcium is already in almost every nutrient line. It's not hard to add too much of either and cause a lock out. On that same note, the screen shot below is from the Canna website, and is about their part a and b. As with most nutrient lines, the a and b already include calcium. My best guess is that you are on the verge of, or at the beginning stages of a lock out cause by an excess of either calcium or magnesium.

 

[NoFrillsNoBills]

There is no such thing as calmag... That's a sales term. Calcium and magnesium are two completely different nutrients that do two completely different things. Most people who use the term calmag are actually intending to refer to only calcium. At some point you will need to start the process of learning how to read the plants needs and issues. That is where all your answers will come from. The plant never lies and is never wrong about what the issue is.. While we (humans) on the other hand, are often wrong.

Adding cal mag for no reason, or when it's not needed, is the cause of about 80% of the plant issues on this forum, lol. Most people don't understand the concept of nutrient lock out. They don't understand that too much calcium will lockout magnesium and make it unavailable to the plant. And that too much magnesium will lock out calcium. Or that calcium is already in almost every nutrient line. It's not hard to add too much of either and cause a lock out. On that same note, the screen shot below is from the Canna website, and is about their part a and b. As with most nutrient lines, the a and b already include calcium.

View attachment 1224005

Ok thanks, yea thats what I'm trying to do right now regarding trying to read the plant. I don't know what I'm looking at half the time so have to crossreference and compare everything. I've been making guesses, and trying to identify issues based off pictures and graphs made available on a plethora of websites. This is what I've been using primarily for trying to identify issues. I thought the calcium in the Canna nutrients was enough but then I was told otherwise on a different website and that I needed to get the product that I am using with it, so I did.

I've never gardened in my life, and this is my first go at anything. I'm only coming here for assistance when the fixes i've tried based on reading done isn't working. I've got a ton to learn. I've already learned a lot as far as starting my grow and going through these problems is the only way Im going to learn to read the plants. That's why I started my post off with what I thought the problem was (pH and calcium related).

I'm going to back off the nutrients as suggested by MOG and cutout the 'calmag' as you suggest, and see how things go from here. There's a lot to learn. The biggest thing is learning which information is good information and what is bad. I've gotten a lot of conflicting information, which is how I ended up with the products I'm using, and how I ended up on this website tbh. This place is definitely more informational than the other websites/forums out there.