1 out of 1(100%)reviewers would recommend this product to a friend.
Customer Reviews for Marineland Bio-Filter Balls (90 pieces)
Review 1 for Marineland Bio-Filter Balls (90 pieces)
1 of 1 found this review helpful.
Date:August 30, 2012
I like them, I was looking fo k-1, but these little balls float, have tons of surface area, and if you have the filter area , and air injected , they will bounce around , float , grow benefitial bacteria probrobly better then anything on the market.