I mean it’s a surface for bacteria to grow. Technically it can work, but I’d be more concerned about what it’s made with and whether that would leach anything into the water. If it doesn’t, then there’s no reason it can’t be used, other than it maybe isn’t the most attractive looking stuff, but to each their own. Whether it’s “better” i doubt you’ll ever have a straight answer on that because every single tank is different and you’re gonna get different opinions on how it works with different setups. Too many variables. Maybe I’m missing something, but any particular reason to use this over other types of rock? I found almost zero info on this stuff when searching.
