New Grower Calmag deficiency ??

[13_12]

Hello what PH pen do you have? cheap one or a good one

It's an expensive one (depends on your definition of expensive though), it's an Apera but I can't remember the model name

 

[Del boy]

It's an expensive one (depends on your definition of expensive though), it's an Apera but I can't remember the model name

Just asking as cheap ones are well out off range that was all.

 

[Suki]

So far I hadn't had any problems like this so I though water feed water feed was fine, but yeah I think now I'll add another water after each feed

Ime, they will look totally fine a lot of times until transition and then quickly go downhill if things are out of balance.

 

[Jovinn]

Adding more calmag more than likely won't help, especially with excess N, as most calmags also contain N. I would agree with @Mañ'O'Green, IMO I would 100% say this is lockout, NOT a deficiency. Adding to what you've already got going it going to make things worse.
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This would apply to foliar spray as well? Wouldn’t it be available directly through the stomata, regardless of what’s going on at the roots?

 

[Suki]

This would apply to foliar spray as well? Wouldn’t it be available directly through the stomata, regardless of what’s going on at the roots?

Its the plant itself, not root specific afaik. I'm also questioning if this a Ca def at all as it almost looks like P def to me, which can be caused by excess Ca. Adding more of anything when its being locked out isn't going to solve the issue as its not that the plant doesn't have enough available, it is unable to metabolize it with the excess of other nutrients. @Mañ'O'Green would likely be able to explain it better as I'm not 100% sure on the mechanics of it.

 

[Suki]

The two can look very similar early on, but Ca def typically starts on new growth while P def usually starts on older growth if I'm remembering correctly.

 

[Mañ'O'Green]

You are in DWC right? Are you using HydroGuard?

So far I hadn't had any problems like this so I though water feed water feed was fine, but yeah I think now I'll add another water after each feed

This is how you become a farmer. The schedule of how many days between fertilizer depends on the plants. If they start to get dark green add a day. If the bottom leaves start to turn yellow and the plant is limey green subtract a day. When you are watching for these trends you will begin to see them sooner.

 

[DCLXVI]

Well the calvary has arrived! Hope you get it sorted out. My current soil pots need a feed, water, water, water, water. Crazy how much it can change from grow to grow and plant to plant. I suspect a couple extra watering sessions and then maybe reduce the feed strength by 10% and see how it goes.

 

[Jovinn]

Well the calmag spray didn’t help. Or hurt. I can’t imagine they’re low on P since I’m transitioning to flower, 1:1:1 m:g:b Flora. And since it’s only affecting a few and they’re all connected, doesn’t seem like much I can do about it. Hope you have better luck with this than I have!

 

[Jovinn]

Its the plant itself, not root specific afaik. I'm also questioning if this a Ca def at all as it almost looks like P def to me, which can be caused by excess Ca. Adding more of anything when its being locked out isn't going to solve the issue as its not that the plant doesn't have enough available, it is unable to metabolize it with the excess of other nutrients. @Mañ'O'Green would likely be able to explain it better as I'm not 100% sure on the mechanics of it.

Pretty sure that’s not how lockout works. Lockout is a chemical reaction between fertilizer molecules, forming compounds which are then unavailable (often insoluble). It’s not a biochemical process occurring within the plant cells. Pretty sure I ended up with Ca unavailability due to huge ph swings. But yes, an imbalance in one component can cause the plant to absorb another poorly. Maybe it’s me, but before the advent of coco and the attendant focus on calcium, it seemed like calcium problems were rare. Maybe we just weren’t as attuned.