Hi okay so I have been thinking about restarting my tankNice ya I think you are on the right track then with the water changes. And no, I'd say if you had the tank running since 2021 and are still having algae and stability issues starting over is not too extreme. I actually had a similar situation with a tank that was running for 8 years until I ripped it down and started from scratch.
However I just got a new anemone
If I were to place everything in a holding tank and keep the sand.Would I still need to wait for it to cycle