She will live off the cal-mag and the enzymes for a long time that have trace nutrients in there. How much oxygen are you pumping in the bucket. Cold water holds higher amounts of (do) Dissolved oxygen and allows the nutrients to be properly disbursed while warmer water holds very little (do) What I do is take the ro water and refrigerate it to 36*f I’ll add 2 gallons of ro water from the refrigerator then a gallon of room temperature water. I add my enzymes then cal-mag then micro grow bloom. In that order. It’s hard to say what is going wrong but there are clues to be found and areas to build on. But mainly Rez temperature. Proper ph. And a clean system. I researched for a year and read everything I could find on proper dwc operation. But nothing compares to actually running a the system. You could be mixing nutrients inproperly and causing a lockout. Have you tried contacting your nutrients manufacturer they will give you the proper mixing ratio and what’s arrangement they should be mixed. What type of ph up and down are you using.