What is your favorite topic when it comes to reefing? You know what it is. It's the thing that you could talk about for hours with another reefer.
For me, it's anything regarding advances in the hobby. Not so much things like the newest tech, although some new tech is definitely intriguing, but things that we progressively learn. Keeping nitrates and phosphates down at 0 was an accepted reefing practice, but people's tanks weren't doing well because of it. We now know that nitrate and phosphate are necessary for a healthy reef tank.
For me, it's anything regarding advances in the hobby. Not so much things like the newest tech, although some new tech is definitely intriguing, but things that we progressively learn. Keeping nitrates and phosphates down at 0 was an accepted reefing practice, but people's tanks weren't doing well because of it. We now know that nitrate and phosphate are necessary for a healthy reef tank.