White/grey spots on my plant leaves - Help please

[Smokej]

Hi,

I've seen this first 30 minutes ago when I came home, I have a few plants (indoor soil grow) and they have grey/white spots on their leaves. They weren't there in the morning tho.

What could it be and how can I fix this?

Pics included.

Thanks

 

[scroglodyte]

is it mildew? does it wipe off?

 

[Smokej]

I can wipe of some of it yes, gently with my fingers.

 

[MrMeanGreen]

looks like watering residue to me.

 

[Smokej]

looks like watering residue to me.

That is not harmful, right?

 

[Smokej]

Ok, now the spots are turning yellow and there is much more of them. What is happening??

 

[Smokej]

Nobody knows?

 

[DaBotniss]

Where is your growing space located? Clean very well? Make sure there is ventalation. Humidity?

 

[Smokej]

@DaBotniss . It's in my attic, it is clean yes, and it is also ventilated pretty good.

Here are the new pics, its getting worse :/

 

[bcgrowguy]

cal/mag deficiency

 

[Smokej]

Double posted.

 

[Smokej]

Triple posted.

 

[Smokej]

I bought some epsom salt, I hope it will help.

 

[Smokej]

Ok, I have the same problem on my new plants (17 days old), I've added epsom salt again but I doubt that it will help, please help