Thats the thing with a DWC , RDWC , Hydro tables any of that sorta of nature when growing more then one strain , it's really hard to balance the plants needs because various plants require various things . The advice I can offer is to boost the CalMg anyways so that your plant gets what she needs but keep an eye out on your other plants . Do this over time so you don't run into anymore problems such as nutrient lock outs because of the salt that would build up on the roots . Slowly but surely you will over come this problem . Just know for next time that sometimes its a bit harder to grow more then one strain at a time in those kinds of systems . Other then that your grow seems to be well on track and you're well on your way to getting some nice medicine ! I hope the information I've provided you helps you understand what sorts of problems you will run into in a multi strain RDWC grow and how to correct the problem over time . Happy Growing!!