Crushed Coral

crushed-coral-substrate

Crushed  coral can be great for saltwater or freshwater aquariums. However there are some cons that may outweigh the benefits. Refer to the bulleted lists below.

Crushed Coral Pros :

  • Helps stabilize PH by increase KH and GH
  • Will never need to be replaced (if vacuumed regularly)

Crushed Coral Cons :

  • Can develop small pockets of fish waste and food causing nitrates to rise.
  • Needs to be vacuumed a minimum of once a week. Therefor crushed coral would not be a good choice for a planted aquarium.
  • Not easily penetrated by fish and invertebrates that like to dig and hide under substrate.