Light burn or Potassium deficiency in Veg?

Hello, I’m having this problem for 2 weeks now. This Silver haze by sensi seeds it’s in week 5 of veg in a hydro setup with clay pebbles.
in the first stages I thought was some nutrient burn because of the burn tips, so I low the ppm up to 300. I notice the problem proceed so I raise the ppm again to 600 and problems still persist.
I tried to raise the light to 90cm and the dimmer of the SF4000 to 50%, but I notice the damage leafs are getting worst day by day.
My PH is always around 5.7 to 6.1.
Can anyone give me a help?

As plants mature they need more feed not less
If you start at too high it is difficult to dial in =give the plants what they are showing you they need
At some point you pushed them and now are trying take it back
Hazes can be fussy to begin with but my experience growing them hasn't been leaf formation like yours
I hope it is a haze but it looks suspect from here

I don't know for sure how to correct your issues but I suspect some defoliation may be on the horizon given the big swings you have been taking

Herb & Suds said:

As plants mature they need more feed not less
If you start at too high it is difficult to dial in =give the plants what they are showing you they need
At some point you pushed them and now are trying take it back
Hazes can be fussy to begin with but my experience growing them hasn't been leaf formation like yours
I hope it is a haze but it looks suspect from here

I don't know for sure how to correct your issues but I suspect some defoliation may be on the horizon given the big swings you have been taking

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Hello, thank you for your reply!
I start the seedling at 300ppm then raise up to 700 gradually when I start to see the burn tips, because I’m a new grower thought was over feed that’s why I lower it down (also read that sativa dominat require much less ppm) When I defoliate I notice the problem only appear in new leafs after some days maybe a week.
At this time don’t know what else to do to try to fix this, been topping and scrog to control the height but don’t have much more time to put it in flower because it still will stretch 2.5x

What exactly are you feeding it? Are you using a lot of CalMag?

twentyeight.threefive said:

What exactly are you feeding it? Are you using a lot of CalMag?

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Hi, my tap water is 50ppm I had calmag until reach 90 ppm then I give advanced nutrients sensi grow, b52 and voodoo. About 700ppm and then I add some water until reach 600ppm. Currently have it in 560ppm +-, I change the water every Friday
I also bought some Plagron Hydro to try in the next water change if cannot find a solution until then

SamirK said:

Hi, my tap water is 50ppm I had calmag until reach 90 ppm then I give advanced nutrients sensi grow, b52 and voodoo. About 700ppm and then I add some water until reach 600ppm. Currently have it in 560ppm +-, I change the water every Friday
I also bought some Plagron Hydro to try in the next water change if cannot find a solution until then

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I tried looking up what's in your nutrients but apparently AN doesn't want you to know. The Voodoo is listed as a root expander and recommended for only the first two weeks. Not a fan of bottles.

twentyeight.threefive said:

I tried looking up what's in your nutrients but apparently AN doesn't want you to know. The Voodoo is listed as a root expander and recommended for only the first two weeks. Not a fan of bottles.

Click to expand...

What I do to see what's in a product when the company doesn't list the ingredients on the website is google it. For B52 you can google "Advanced Nutrients B52 label" and click on images. You can usually find an image of the label. In the case of B52 you'll find different labels with different formulations since they seem to change their ingredients regularly.

xtsho said:

What I do to see what's in a product when the company doesn't list the ingredients on the website is google it. For B52 you can google "Advanced Nutrients B52 label" and click on images. You can usually find an image of the label. In the case of B52 you'll find different labels with different formulations since they seem to change their ingredients regularly.

Click to expand...

Makes you question a company that isn't upfront about their own products. Shouldn't have to hunt down the ingredients of something you might want to buy.

For the smell I think it’s B vitamin similar to superthrive, at least both of them have the same smell and look

But yes, what attract me was the ph perfect and don’t even work, I have to adjust with PH-

Made a big defoliation and problems still continue. Already changed the nutes from AN to Plagron
Don’t know what else to do
Any suggestion?