Is that Brightwell brick a standard one or the one with sulfur in it?
It's just their standard dimpled brick (below). They have ones with Sulfur in it?
Xport-NO3 Dimpled Brick with 250mL Microbacter7
Dimpled Brick Dimensions - 9.0" L x 4.5" W x 2.625" H Xport-NO3 is a superior biomedia that utilizes NanoIntelex technology allowing Brightwell to create one of the best, most adaptable denitrifying biomedia cubes on the market today. Made specifically to allow beneficial denitrifying bacteria...
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