Calcium deficiency

[JoniC]

We know we have a calcium deficiency and have been try to get a hold of it. We are in our 5th week of flower and starting to see spots again. We add 1 tsp cal/mag per gallon of water at every watering. Can I add half a tsp more of cal/mag to that?

[Catfish22]

I think you could it's hard to OD one on cal-mag, to a point of course. You can cause lock out of other nutes with too much but a half teaspoon should be OK.

How is your pH? pH problems can look like a calcium deficiency. Some strains get real bitchy about pH when they get in full blown flower like you are.

Light stress can mimic it also. Have you moved your light closer recently?

I'm sure someone with more experience than I will also weigh in.

Try these:

https://www.growweedeasy.com/common-nutrient-problems

https://www.growweedeasy.com/ph

Happy farming!🙂🌱

[MeEasy]

Calmag deficiency is the most miss diagnosed issue in all of our plant growing world, I'm not saying that you don't have a calmag issue but there's a few other problems that look very similar. I'd like to see the plant in order to give my opinion or attempt to diagnose it. As for adding more calmag I have never needed to use it but looking through my notes I found this copy paste

CALMAG
Calmag should be 3-5 ml per gallon for large plants and 1-2 ml for seedlings/cutting. If using ro water use it everytime

[JoniC]

[CaptainWiese91]

From that one picure.. I wouldn’t say calmag deficiency .. rather to much nutrients or the light is too close. Or even just PH issues ??