Lava Rock (1kg)

LAVA rock is ideal for all external canister / larger filters / sumps, or for decoration purposes in the aquarium, great for attaching plants too.

High pleasant natural rock with remarkable homes for water filtration. Excellent organic media for any aquarium. Use in any type of filter out compartment with a massive surface location and porosity it provides an ideal domestic for all styles of critical beneficial bacteria.

Once mature the media will system waste (nitrification) or even ruin it down/reduce nitrate (denitrification). More powerful biologically than ceramic rings / sponges and many other artificial media types. This media may be left almost indefinitely (possibly a rinse with tank water to remove detritus every few months)