Adding calmag to soft water

[knidik]

Hi,

I'm growing in Biobizz light mix soil. Never added Calmag before because water in my city was hard. Here it's soft : tap water EC is 0.1.
Should I add calmag to every watering ? Right now they're week old seedlings. We grow other plants and there are no signs of calcium deficiency. But they're not cannabis

Thanks

Ps- they’re looking good so far

 

[Nutty sKunK]

Hi,

I'm growing in Biobizz light mix soil. Never added Calmag before because water in my city was hard. Here it's soft : tap water EC is 0.1.
Should I add calmag to every watering ? Right now they're week old seedlings. We grow other plants and there are no signs of calcium deficiency. But they're not cannabis

Thanks

Ps- they’re looking good so far

How long have you grown other plants with this new soft water?

 

[DeadHeadX]

Do you have an in-home water softener? If so, many of those (like the Culligan in my house) use sodium based products and the water long term is not best for plants.

 

[knidik]

Other plants (habaneros) are outdoor and have been there for 6 months. They’re thriving.

It’s naturally soft water, it just goes through a sediment and activated charcoal filter to filter out dirt/unwanted stuff, but doesn’t filter any minerals.