you can use
hydroguard if you would like
only helps dosnt hurt
+life you need to order from the company specifically
https://hydroponic-research.com/products/life
I have used
CNS17
Maxibloom
GH 3part
Veg + Bloom
right now I am using RX green Solution
as I am testing for them and my grow shop to see if they want to carry it or not
not once have I ever had to use
CalMg
I used it per
Veg+Bloom instructions and got N tox
so I stopped using it
I have used grow formulas all the way through
I have used Bloom
formulas all the way through and everything inbetween
never had to use
Calmg in coco
if you feed correctly and feed at the correct times....with the correct ppm for the plant with the correct ph you never need anything but your standard nutrients
in big agg they dont add
calmg
of course they use a 2 part...as in
Calnit / nute mix
Cal is the N
Nute mix covers everything else
they usually start at 200ppm N and drop to 100ppm in flower
Nute mix always remains the same
in coco....and cannabis in general Cal should always equal or be just slightly above N
as in 100ppm N
130ppm Ca
this is where you can really dial in nutrients specific to your plants needs
takes a few years of cation exchange knowledge, RH, transpiration ect...