Cal-Mag Def?

[BlazeChina]

This has just popped up on a set of leaves over the past few days.

Ph is fine...although it fluctuates a little over the pot...but on average around 6.5

I'm guessing its a Calcium/Mg/Mn def but I'd really like a second opinion

So far I've been growing without nutes, just a premix of organic stuff I put together which was doing great up until now. I was a little pre-emptive and added a light nute solution (20-20-20) because it contains small amounts of other essential minerals... hopefully that doesn't fuck too much with the grow...

I'm always worried about feeding Autos nutes....

Thanks for any opinions

 

[JM]

yes cal /mag...

foliar feed epsom salts and molasses at 1 tsp / gal of each.

NEVER add salt based ferts (like 20 20 20) to an organic grow... it stops the microrhizzae from colonizing and fixing nutrients..

when working with biology... you cant do something that enhances 1 part and suppresses the other or the overall affect is a decrease.
:tip:

 

[BlazeChina]

Thanks for the speedy confirmation bro....now...finding molasses in China....the new mission.

 

[JM]

is it hard to find there?

 

[Torched]

In the UK it's called Black Treacle, might have better luck finding that.