Fishless Cycle takes weeks. One of the benefits of it is you can add your entire stock once the cycle is complete (some argue half your stock). Either way, how does this play nice with quarantining? If the purpose of quarantining a fish is to make sure it doesn't have a disease that it could pass it off to any other fish, how can you add half or all of your stock once the fishless cycle is complete?
Even if you slowly stocked a 40+ gallon after fishless cycle, each quarantine period of 5 or so fish would take at least 2 weeks each. So adding your 15th fish would take a month and a half, by then some of the BB you built up during the fishless cycle would be gone.
Even if you slowly stocked a 40+ gallon after fishless cycle, each quarantine period of 5 or so fish would take at least 2 weeks each. So adding your 15th fish would take a month and a half, by then some of the BB you built up during the fishless cycle would be gone.