Help: yellow and brown spots

[TripleCchronic]

Could anybody help me identify what's going on with my plant. How to make Magnesium deficiency earlier on in my grow and this looks different. I'm also currently adding a calcium magnesium supplement. I have been rinsing off nutrient build up with a spray bottle from my roots and thought maybe it was splashed back from that. However I haven't done that in a while and the dots are spreading to the newer growth. No sign of bugs either. My fan did fail the other day and i have t had a chance to replace but this issue started before that. I have a cool mist humidifier in my tent aswell so maybe lense burn but I havent noticed any condensation on the leaves.

 

[Pbass]

Hiya @TripleCchronic whats your new growth like? Discoloration in old leaves isn't really a great indicator of whats going on right now... I have some pretty gnarly looking leaves that last from early in veg all the way through flower that never get better but still make food! Once they are bunrt like that they aren't coming back, but I don't remove them unless they are blocking something more important. It is a good indicator you did have cal/mag issues...but it sounds like you know this and have implemented the fix! Hopefully your tops are green and proud! CHeers mate, GL to your grow!

 

[TripleCchronic]

This is what the new growth looks like. The brand new growth looks ok but even growth from less then a week ago has spots.

 

[TripleCchronic]

The discoloration started a few weeks after I fixes the deficiency. Im wondering if this is now an excess.

 

[Pbass]

It could be some lockout goin on but they look fat and like they are growing fast at the moment. They probably will grow right past that as long as you have a good handle on your soil and nutes. Do you know your soil and water PH?

 

[TripleCchronic]

I run dwc and its between 5.8 and 6.2 at all times

 

[Pbass]

OOoh hydro...hmm. I got no clue on hydro!