Recently I had a firefish goby and a royal gramma (from a LFS) in an observation qt. The firefish died in qt I think from stress (no signs of illness). I moved the royal gramma to my display after observation and suddenly after 10 days or so it had major fin damage and couldnt swim. we moved back to qt where it died. I have two theories. 1 is our blue damsel bullying. 2 is that it got caught in the powerhead (sicce nano voyager). Always we planned to rehome the damsel if needed but we didnt see signs. That will be happening now as soon as its possible. Also had already planned to 3d print an anemone guard on the powerhead (still an amateur at modeling and haven't found an existing one that works yet). The royal gramma was larger so it does surprise me that the damsel was the issue. We did see them chasing each other occasionally. But this experience to date has made me rethink my stocking plan and sequence. Also as i learn more we find more fish we want 🤣. This is my current plan. Internet gives conflicting info on stocking levels. I am worried i will overstock. Also want to stock in the best order. Tank is an aio 31G tideline 4 months old with a protein skimmer and a micro refugium in the rear chamber, and I have started adding pods. Working to get phosphates down (above the hanna ulr test range). This "plan" is from google's AI, but it thinks this livestock plan needs a 40G. Ive seem similar plans online for a 32? If it is too tight what should I cut -or- when would we outgrow the tank lol? I have a pair of oscellaris who are hosting the side where the rear overflow is. These are the next steps from AI. The mandarin is a big priority but we love all of these fish. STEP 1: Add Firefish Goby & Tailspot Blenny together │ └── Wait 2 Weeks (Monitor parameter stability) │ ├──> STEP 2: Add Royal Gramma & Banggai Cardinal │ └── Wait 2-3 Weeks (Allows copepod populations to peak) │ ├──> STEP 3: Add Captive-Bred Mandarin Dragonet │ └── Wait until tank is 6-9 months old total