MarinePure Media Block 8"x8"x4" Corals In freshwater or salt water

In freshwater or salt water aquariums phosphates will feed nuisance algae which can overrun plants and expensive corals spoiling the aesthetics of the tank and in extreme cases killing its inhabitants

Size: 1-2"

Magnesium sulphate

This speaker will play one of many alarm sounds and tunes that are built into the Apex

MarinePure Media Block 8"x8"x4" Corals In freshwater or salt water8x8x4" Block Ammonia, Nitrite and Nitrate Removal Primarily designed to provide deep anaerobic zones for de nitrification in passive systems. Live rock substitute popular among reef hobbyists as a substitute for live rock because it reduces nitrates more efficiently without harming the environment. Use in sumps, stacked in extra large filters.