ANS BIO BLOCK
Biological filtration media (mild alkaline)
Suitable for freshwater and saltwater use
High quality media with mini pores increasing effective surface area.
Has filtration surface 5 times more than conventional ceramic rings.
Slight alkaline(pH 7.5)
Use in trickle filter, top filter, sump filtration, pond filtration, internal filter, canister filter.
Act as a buffer to reduce pH drop.