Folks - I am preparing to quarantine some fish in the next 24 hours. I have filled my small QT with about 2.5 gallons of water from my DT and 2.5 gallons from my new RO/DI system mixed with salt. Since I just got my RO, about 80% of the water in my DT was previously treated with prime (since I only did a 20% change in my 75 g DT when i got my RO). I plan to use cupramine for the QT, therefore should i start over my QT using 100% RO water since my DT was previously treated with prime? Keep in mind, no prime has been added to the DT in about 2 weeks. Would the prime still be active in that water and in turn make the copper more Dangerous?