It's all a matter of opinion in the end. I know a guy who runs a aqua zoo and has several beautiful reef tanks. He uses bare large shells and things of that nature to cover the mostly bare bottom. He has had long term success. He is against DSB's. Just another side to look at. I have also used CC as a substrate before for many years with no ill effects and the tank I am currently setting up will also have CC.
However, I thoroughly siphon the substrate weekly with water changes as I keep predator fish and they produce alot of waste.
Just my opinion.
However, I thoroughly siphon the substrate weekly with water changes as I keep predator fish and they produce alot of waste.
Just my opinion.