HELP! What are these spots?! Nutrient burn?

[theblues88]

Hi!

Just noticed a few spots on the leaves tips...

I'm using biobizz grow, algamic and started bloom nutes last watering.

Water ph is in a good range (around 6.5)

There are other two autos in the same tent with the same nute schedule and only this one is showing this burnt leaves

Could you please help me identify what's the problem?

Pics: https://imgur.com/a/R5yat

Thanks

[UrbZ]

Definitely not nute burn.

kind of looks like a potassium deficiency in my opinion

[UrbZ]

You've seen no pest anywhere correct?

I guess after looking at other pictures it could be nute burn. Some pictures have similar marks to these. But they also have the burnt tips which seems you do not have.

Also could be the beginning of a mag deficiency.

[theblues88]

UrbZ, no pests... I just found out that biobizz nutes lacks magnesium!! Seems like I need to add epsom salts.

[theblues88]

Definitely not nute burn.

kind of looks like a potassium deficiency in my opinion

Thanks! Just started reading about potassium deficiency and it does look like the same thing I'm seeing in my plant. I was worried since I started bloom nutes in the last watering (biobizz bloom)...

Now.. why would it only affect one of my plants?

[UrbZ]

Are all three the same strain?

Even if it's the same strain not all plants are the same. The more you grow the more you'll notice that each plant takes different things some drink more water some drink less. Each one is different in how they react to nutrients as well.

Is this the largest plant out of the 3? If so it will likely be able to use/handle more nutrients and watering. Just from size alone uptake of nutrients can be a huge factor for each individual plant.

[theblues88]

UrbZ, they are not the same strain and yeah, this one (with the deficiency) is indeed the biggest plant. Going to increase bloom nutes next watering.

[UrbZ]

Sounds like you got a good handle on what's going on. I would try that and not fret too much about it it's still early. In a couple of days if it's way worse or new symptoms show maybe post again.

[theblues88]

thanks man, appreciate it!

[UrbZ]

For sure.