RDWC adding calmag after nutrient change?

[Hurrl]

I've recently started using the new version of 1-part megacrop and I'm noticing calcium deficiency starting as my girls are going into preflower stretch. Is it ok to add calmag into my rdwc reservoir after a fresh res change? I have always read that Calmag needs to go in first, but in this case it would save me a lot of time to just add it in now, rather than mix up a new full res. Takes me a day to do a res change, (overnight mixing). If adding in calmag is a no go, I may just foliar spray to try and buy some time.

 

[Hurrl]

Eh.. What better way to learn than just make a move and see what happens? Move made, lets see what happens.

 

[Aqua Man]

Yes you can. I use mega crop also and same thing I need to add cal mag

 

[Hurrl]

Yes you can. I use mega crop also and same thing I need to add cal mag

Thanks, puts my worry-wart self at ease a little. Much appreciated feedback!

Edit: Curious to know if you use greenleafnutrient's calmag or another brand? I added in some dutch masters since it only had 2% nitrogen in comparison to the 13% in greenleafnutrient's.