Lighting My first-ever Autocob grow! (HSO Blue Dream x2)

[PapaEmeritus]

Alrighty friendos. I'm mucho medicated so apologies for any potential rambling. Here's two pics of the deficiency issue I have going on now for a week or two.

We're on Day 59. First pic is the first leaf I noticed it on a week or so ago maybe a little longer - it looked like it had self corrected for awhile so I never really bothered to have it diagnosed. Second pic is more recent damage (within the last week). Any ideas? @BigSm0 ? @Waira ?

 

[PapaEmeritus]

Just looked through some deficiency reference pics to see if I could sort the issue myself. Am I looking at a Cal/Mag issue, and perhaps either a teensy bit of either light burn or nute burn on the tips there?

 

[Gauge Steel]

Your leaves look Mucho green. I would look at things that too much N could lock out. Let me check some notes.

 

[Gauge Steel]

yeah im thinking Mag Good call. This is a pic of Mag deficiency.
This plant has super green foliage as well.

 

[Gauge Steel]

Hows it hangin?

 

[PapaEmeritus]

Yeah. The more I look at it and compare it to reference pics I'm finding the more I'm thinking it looks like a calcium issue with the possibility of magnesium as well. Damn. I wish I had paid more attention to this earlier, but live and learn. I sure as hell will so something about it quick if I see it in future grows.

As it stands now I have a feeling this girl isn't too far from harvest - I'm gonna try to check some of her trichs tonight and see where they're at. If they look close, I'll just let her roll til she uses up this current batch of nutes then flush her a few days and call it a wrap. Between the deficiency issue and the wonky light schedule changes, I don't think there's gonna be packing on much more bud at this point and what she's got now looks great so I'm happy to more or less conclude things if she's almost ready to go.

Anyway, sorry for the rambles. Still waking up! Updates coming asap.

 

[Waira]

:smoking: hey bud! ...yeah, I'd say that's most likely Ca defc. kicking up there,... No Mg defc. though, and the leaves look very green,... do I see a bit of tip claw there? If so, you have/had some minor N-tox' happening,...this can potentially cause some induced Ca defc.,... but it depends now on when the N-tox started,... oh, if she's this close to harvest, then I'm assuming the N-tox was from much earlier,... what nutes are you using, including the Ca-Mg? This product often has N in it,... something like 1-0-0 is fine, but if it's more than that, I'd look into getting an alternative product. ... excess N during bloom can also retard bud formation, making it leafy larfy shit!

 

[PapaEmeritus]

:smoking: hey bud! ...yeah, I'd say that's most likely Ca defc. kicking up there,... No Mg defc. though, and the leaves look very green,... do I see a bit of tip claw there? If so, you have/had some minor N-tox' happening,...this can potentially cause some induced Ca defc.,... but it depends now on when the N-tox started,... oh, if she's this close to harvest, then I'm assuming the N-tox was from much earlier,... what nutes are you using, including the Ca-Mg? This product often has N in it,... something like 1-0-0 is fine, but if it's more than that, I'd look into getting an alternative product. ... excess N during bloom can also retard bud formation, making it leafy larfy shit!

Hey @Waira , thanks for checking in!

My nute regimen is as follows: Every gallon of water (tap, rested for 24 hrs) gets .5ml Armor Si, 7g Maxibloom, 6ml CALiMAGic and .6ml Mammoth P. Then it's PH'd to 5.8. The tip burn/clawing started this week, well after the main deficiency appeared.

But yeah, we're 59 days in on a strain that's listed for 70-75 days, which according to at least one journal I've seen can be ready as early as 60 days so I'm not sure if attempting a course correction now would do much good, you know? It doesn't have a *ton* of bud on it but it's definitely not terrible, either.

 

[Waira]

...at this late stage, you got it, let her cruise home,... CaliMagic is fine! Taper off the nutes if you haven't already,... is she eating lower fans? This is a clue to how internally loaded she is with nutes,... and will in part determine how long you do a cleanse for (not flush, that's means copious water through the pot to me), no nuthin' for a few days or so usually.... lot's of back and forth about this I know! But how much she's been fed over time, and how much fan snacking she's doing are solid criteria for judging your cleanse time when using synthetics,...

 

[PapaEmeritus]

...at this late stage, you got it, let her cruise home,... CaliMagic is fine! Taper off the nutes if you haven't already,... is she eating lower fans? This is a clue to how internally loaded she is with nutes,... and will in part determine how long you do a cleanse for (not flush, that's means copious water through the pot to me), no nuthin' for a few days or so usually.... lot's of back and forth about this I know! But how much she's been fed over time, and how much fan snacking she's doing are solid criteria for judging your cleanse time when using synthetics,...

That's pretty much what I figured - gonna let her finish the remainder of the gallon of nutes I made last night, then just water for a few days and chop-chop.

I haven't really given her a good look in a few days - was sidelined by some health stuff, and when I finally went to water her myself last night I was way, way too baked to do much besides water her. I'm surprised I managed to make a coherent post last night, lol. I'll check her tonight at lights-on though. I think I should be fine with a few day's cleanse - she eats pretty good so far.

Thanks again for stopping in and for the help, man - I always learn something from you, and it means a ton.