the problem most people have with the botinacare cal-mag is,when you mix your nutrients. a lot of people do it a lot of people do it 100 different ways. the best way to do it really the only way,witch they fail to mention on the label when you mix your soup,change your res,or however you make your mix the very first thing that should go in your water,jug,res,tray,bucket,etc is the cal-mag.
what happens if you put your stuff in in a different order,or you mix it bye a feeding chart/schedule and its 3rd. NO FUCK THAT FROM NOW ON CAL-MAG IS ALWAYS FIRST. always put your cal-mag in first if you dont and mix it with something thats already in there and its not stired/airated ggood it will turn to a white milky cloud and all,every single nutrient you put in is now junk.
try it and see for your self in like a big ass cup with like a 10 to 50ml of each of your nutes and put the cal-mag in 2nd,3rd,or4th and watch it turn to wastless milky junk!!!
THIS IS MH HUMBLE OPINION AND WHAT I HAVE SEEN AND DONE ON MY OWN. AND WHAT MY GUYS AT MY HYDRO STORE AND I CAME TO A CONCLUSION ON.