Newbie Growing: What Have I Done!

[Selfmedigrow]

I'm just glad it's cold here in Scotland, kills off most things Yeah thanks bud, I'm always on the lookout, especially now so close to the finish

 

[Selfmedigrow]

One thing I have noticed is that most of the leaves that are changing are fan leaves, and are going floppy, limp, feel different when you touch them, as in not firm, and are a lighter green than the new foliage growing on some, looks like 2 tone plants! But I have noticed these little specks and burns on 5 of them, so it has to be the feed, I'm putting in 32-48-60 and is third week of flower with ppm at 575-600, but have been adding 10% r/o water to every jug since 2 yesterday to help, is it too little nitrogen? They're mostly on my auto's too, and one other, but my auto's are a few weeks away I think, judging by the look of them, although that's just an estimate (as it's my first grow) on how fast they have been growing, but really have no idea.

 

[Selfmedigrow]

Can somebody tell me when you start to see the leaves dying/turning yellow from nitrogen def in flower? I've looked up and roughly have 3-4 weeks left of flower on a few plants that look bad. I'm seeing these little marks on all of them now though so getting a tad worried.

 

[Selfmedigrow]

Balls! I knew I couldn't go the whole term without problems! To me it looks like nitrogen deficiency, but the brown spots I have no idea. It looks like phosphorus deficiency but is getting 80% the amount of potassium I'm giving them from a 0-4-5 bottle, so not sure what it could be. Made a bottle of 1-1-1.2 at 500ppm so going to run that through them and see what happens. But they look crap.!! Or too much potassium if I'm on a 32-48-60 at 600ppm? It's only the autos that are really getting affected but can see my northern lights is getting nitrogen def, these are the 4 closest to finish so not sure if worth lowering the nutes or starting to flush the autos to see if they perk up?

 

[Pennywise]

I'm seeing magnesium and potassium deficiency which is most likely a lock out. Make sure you dilute the 32-48-60 and I would stop giving the 1-1-1.2. Make soure your ph is in range. I think the problem is too much nutrients locking out and burning the plants.
Look in my signature for the Plant Abuse Chart.

 

[Selfmedigrow]

Oh my god thanks PW! I think, after looking at your chart that you might be right, and also on top of that the cold helped to lock out the potassium! I usually leave the window open a little but recently the temp plummeted and when I checked them one morning it was down to 18 degress C (64F) when they are usually between 24 and 26 degrees (76-80), but I checked them at 10.30am so God knows how low it went through the night! They were really happy with my previous food amount so will give them a flush and then might go back to what it was before the symptoms, just with an extra ml or 2 of 0-4-5 in it, but will keep the ppm around 500. With the flush, i have r/o water ready, is it beneficial to ph it down to 5.8 - 6, or is okay as it is? Thanks bud! I owe you big time!!!

 

[Pennywise]

I always flushed with a mild nute solution, pure water isn't good for them.

 

[Selfmedigrow]

I have a bottle at 350ppm i can use made it yesterday in case they still look worse and worse as time went on. Took this just now, still don't look happy, about 5 or 6 leaves are like this in there.

 

[Pennywise]

That's classic potassium deficiency most likely caused by a lock out.

263A06B3-C839-4F16-804E-C7033138D185.jpeg

• Pennywise
• Jun 6, 2018

Induced deficiencies

 

[Pennywise]

I'm guessing too much nitrogen

 

[Selfmedigrow]

That is amazing! That little chart is so useful!! Thanks mate! How much nitrogen do you usually put in the week before you start to flush? 10% of the nutes?

 

[Selfmedigrow]

I should be paying you for all this time bud, thanks for helping me out so much!!

 

[Pennywise]

I'm using Dyna-Gro Foliage Pro, it's 9-3-7 NPK

 

[Pennywise]

We'll get you to harvest, will take a few days to turn the around.

 

[Selfmedigrow]

I'm using Dyna-Gro Foliage Pro, it's 9-3-7 NPK

Will that amount of nitrogen affect the potassium like in mine so late in flower?

 

[Selfmedigrow]

Ohhh is it supposed to be 0-3-7?? That's not a slipped finger?

 

[Pennywise]

Too much nitrogen can lock out potassium and other nutrients. You still need some nitrogen in flower but not as much as when it was in veg.

 

[Selfmedigrow]

Ahh right!! I didn't realise it would be so much so close to flower, but that's why I'm the newbie with no experience!! I'll learn! Thanks again so much PW! I'm off to put this into practice! Have a nice day bud, catch you later, with 7 soon to hopefully be happy girls.

 

[Selfmedigrow]

So for now I'm going to flush them with a 26-32-40 mix and hope they start to look better, but they look really miserable at the moment. Is crazy that this happened in a few days!

 

[Selfmedigrow]

So I gave them a good flush, and the water coming from my severely damaged plant was extremely dark in comparison to the other 2 autos I flushed, is that due to a build up of crap in the pot? Salts?