Magnesium deficiency?

[NeWcS]

Does this look like a magnesium deficiency? Plant is 3 weeks old from seed. Only used 5mL of cal+mag in a 3.5gal DWC. pH is 5.8

Should I up the cal+mag to the recommended dose? I thought my nutes had enough in it but I am starting to think not.

Thoughts?

 

[HolyMunchies]

What are you using for nutes?
what is your ppm/ec?

It looks overfed to me.

 

[Seamaiden]

That would be the barest beginnings of Mg issues. Barest. You can try upping the Cal-Mag, or you can try adding about 1/8tsp/gal of Epsom salt to the mix, assuming it doesn't bring the EC up to high. If it does, it's easily given as a foliar feed, use from 1/8-1/4tsp/gal as foliar.

 

[NeWcS]

I am using greenleafs version of seni grow http://bit.ly/q3rM4N. I don't think it is due to over feeding due to the fact it started before I started feeding. I don't know the ec as I do not have a meter.

I am going to up the calmag and see if she recovers in the next couple days.

Can anyone say for sure what the think it is??

 

[Seamaiden]

I already did.

I also wouldn't use Cal-Mag, I would limit it as much as possible to just magnesium. Fairly easily accomplished using Epsom salt, and you get some sulfur in the mix to boot.

 

[NeWcS]

SM - Thanks! Maybe Ill give that a try. Where would one buy it?

 

[Seamaiden]

Supermarket, drug store, Walmart.