I recently purchased two ML 3-360s and i want to add some additional bio media. I was first looking at seachem matrix but that stuff just seems too pricey. Not even sure how it happened, but i came across "Laguna Biological Filter Media" on Big Als website (http://www.bigalspets.com/biological-filter-media-3-kg.html) The price seems real nice for that amount and isnt lava rock the same as whats used as matrix?
I was wondering if that stuff would be a viable option to put in some trays of my filters?
I was wondering if that stuff would be a viable option to put in some trays of my filters?