This is Magnesium deficiency right??

[supernaan]

Hi there. I've been using Biobizz nutes for my grow and I did my research before and after purchasing these products. A lot of people were saying that a dose of Magnesium would be required when flowering begins. Is this true? I'm only saying this because I believe I have a Magnesium deficiency on some of my lower fan leaves. I wasn't sure at first if it was Nitrogen or Magnesium deficiency but reading up on it I believe it is a Magnesium deficiency. Its turning light yellow but the veins are still very dark on the leaves. I have some Epsom salts coming in on Friday. I'll post a picture to show you guys...

 

[Muddy]

Yes, that looks like the start of a mag deficiency. Cal/mag deficiencies are pretty common in autos, especially those grown under LEDs, and usually show up around week 5 or so. Having a good cal/mag supplement on hand is always advisable. If you use the epsom salts I'd also suggest you use some molasses with it to add some calcium as well. Use both at the rate of tablespoon per gallon.

 

[supernaan]

Yes, that looks like the start of a mag deficiency. Cal/mag deficiencies are pretty common in autos, especially those grown under LEDs, and usually show up around week 5 or so. Having a good cal/mag supplement on hand is always advisable. If you use the epsom salts I'd also suggest you use some molasses with it to add some calcium as well. Use both at the rate of tablespoon per gallon.

Thanks Muddy. Will the Molasses you use to cook with be alright? I have some organic Molasses at home already.

 

[Muddy]

As long as it's unsulfured molasses it's fine to use.

 

[supernaan]

As long as it's unsulfured molasses it's fine to use.

Yep it is. Thanks Muddy.