MarinePure Sphere

As you would know, i previously tried out the MarinePure cinder block and i rate it way better than my ex number one choice Biohomme plus. Today i am running 12 cinder blocks in one of my tanks and i am planning to gradually add these sphere to all my cannister filter. The sphere actually cost more than the block, no idea why probably the more troublesome manufacturing process. Lets hoipe its as good as the cinder block version