Originally Posted by youdontknowme
if you have high bioloads and have the cash to spend on biomedias , go for matrix and you wont be wrong
I was lucky to get a 4L tub on Black Friday at 60% off and free shipping. Since I'd heard so much about Matrix, I wanted to try it. Now that I know it's only pumice stone, I'm going to be on the hunt for that at the home improvement/pond/farm stores...