So, after a loss of 4 out of 5 fish (to Ich), (made a mistake using someone else rock in my DT). I am going to quarantine my remaining fish and let my DT stay fallow for the 6 weeks as recommended by multiple sources. My question is going forward how many fish can you safely quarantine at a time? I am looking to put all of the fish (3-4 total fish ranging from 4-6 inches in size) that will be in my 110g DT into my QT until the time passes that my DT no longer has Ich. I currently have a 65 gallon setup with no substrate , no rocks and some PVC elbows (4 inch pipe). The filtration I am using is a media filter with mechanical filtration (bio sponges) and a power head for increase circulation. I seeded the tank using Activate. The tank is about 1 week old at this point.