New Grower Magnesium deficiency??? any thoughts guys please?

[Warrior]

Would appreciate any thoughts on these leaves ie deficiency etc? I am of the opinion that it could be a magnesium deficiency? these are on their 9th week any contribution would be well appreciated guys...

 

[WilliamPatrick]

To be safe throw some Epsom salt in your next watering or however you would go about it with hydro...can't hurt week 9.

 

[Warrior]

That is what I have done, hope its the right thing

 

[namvet25]

This is calcium def.You could also have mag and phos def also.Are these leaves lower on the plant? A full plant photo would be nice.

 

[namvet25]

It's still hard to see with your lights on.Being in the ninth week some of the leaves normaly turn yellow and this is normal.You could give them some cal-mag and some higher dose of phos,but this late in the growth I'm not sure it will help but you can try.