Help with brown spots on leaves

[KarlJay]

I've noticed brown spots on the leaves of several plants, it's not just the tips, but sometimes in the center area. It's a 3 to 4 week old CLF T5 Soil grow and I've been adding CalMAGic for a few weeks and the GH Gro/Bloom/Micro for that 2 of the last 3 waterings.

I was thinking MG def, which I thought about 3 weeks ago when I started the CalMAGic. The last water was just PH balanced no nutes.

 

[KarlJay]

I noticed on the bottle of CAliMAGic that it implies that it should be used for a while and then stopped: "Continuous use may be helpful for fast growing annuals"

Does that mean that we are supposed to stop using it after a few weeks, or if you have a CA/MG def that you should use it through the whole growth cycle?

I assumed that I would be using it thru the whole cycle, because if I did have a CA/MG def, it would still be there, CALiMAGic doen't cure it, it only treats it.

Am I wrong?

Also, since I've been using CALiMAGic for a few weeks, should I be at full strength now?

 

[KarlJay]

anyone?

 

[oldman60]

That looks more like some kind of burn to me.

I grow in hydro and use cal/mag every res change.