Cal-Mag Question .

K

ksamih

Member
I’m running general hydro nutes at 80% , ran into a deficiency week5. What do I run cal mag at without getting burned also how long all throughout growth ?
 
CaliWorthington

CaliWorthington

Well-Known Member
ksamih said:
I’m running general hydro nutes at 80% , ran into a deficiency week5. What do I run cal mag at without getting burned also how long all throughout growth ?
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According to a chart someone recently posted here, the plants' need for cal mag drops in week 1 of flowering, and again in week 4. Unless you have a cal mag deficiency, you shouldn't need more than 2ml/gal at this point.

Check this link for information on how nutrients interact. Cal mag and Potassium (K) can have adverse effects on each other, for example.

Canna - Interactions Between Nutrients
 
nevergoodenuf

nevergoodenuf

Well-Known Member
What kind of lighting are you using and what are your temps? If running LEDs, you need to have a room temp in the high 70*s or low 80*s. Low 70* with LEDs can affect Ca uptake.
 
budman111

budman111

Well-Known Member
The only time Calcium is demanded by the plant is when using soft water and usually some blurple LED in flower need Calcium supplemented or it can go deficient beyond recovery .
 
Johiem

Johiem

Well-Known Member
It's not like it is hard to make your own. I just boil the hell out of some eggshells and pull around 375 PPM of Ca from them into 1 cup of distilled water boiled down from 2 cups, and my girls are loving it.
 
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