Water changes

[Aquattro]

Originally Posted by ReefOcean

Maybe change it every year? Shall I set a standard and spread it around like wildfire...

Change 10 percent of your rock once per year. Set in stone. No debating pls.

Now you're just spouting off. Rock is known to accumulate nutrients over time, contributing to old tank syndrome, just like deep sand beds. I read it on the Internet.
Now it seems to me most, if not all of your questions have been answered, but you don't acknowledge them. We've been debating, and providing rebuttals to your comments (and poking doodles) all day long.