Should I use call mag

[Whistler]

Today is first day of week 3 my first grow everything going smoothly I transplanted at week 2 into 1 gal of ffof she loves it got a tds meter today my well is at 40ppm should I be using call mag at this point or wait till I start nutes I will be moving her to a 7 gal fab pot in another week she keeps growing the way she is strain is la chocolate under a 300 and 600 viparspectra in a 32x32 here is a couple picture

 

[Weed Pharma]

Yes, LED’s tend to require more Cal/Mag and it’s easier to supplement than treat deficiencies.

 

[Skunkaroo]

i use calmag in coco, ocean forest is fine without but wont hurt anything to use it.

 

[az2000]

well is at 40ppm should I be using call mag at this point

FWIW, you can use epsom salt and gypsum (both water soluable) instead of "calmag." Much less expensive. 1g/gal gypsum produces 61ppm of Ca. 1g/gal epsom salt produces 26ppm Mg. That's a good 2:1 ratio. Cannabis likes 2:1 to 4:1. Also, 87ppm would be a reasonable amount for your 40ppm well water. (I try to start with water that's 150ppm, in that range. +/- 30ppm.). Gypsum dissolves more easily in hot water. That adds to the hassle factor. But, it's cheap.

 

[HappyDaze]

Isn't Ocean / Forest full of crab meal? There should be adequate Ca available already in your mix....it's easier to treat deficiencies than toxicity as the plant matures...I wouldn't do anything to it. Right now, it doesn't need Ca.

Don't love it to death.

 

[Whistler]

Thanks for the input think I will hold off another week till final transplant unless I see a problem