Aqua Illumination - Ext Rail 6 Clear Seachem a=amount to raise alkalinity in

a=amount to raise alkalinity in meq/L)

Supplement contains nitrifying bacteria

All AI devices include smart control standard

Will filter a decorative pond (no fish) up to 6000 litres or a goldfish pond of up to 3000 litres

Aqua Illumination - Ext Rail 6 Clear Seachem a=amount to raise alkalinity inThe EXT Rail System continues AquaIllumination's industry leading core of modularity and elegant design. From mounting a single Hydra to hanging multiple modules over your tank, the EXT provides a sleek and complete mounting solution. Connect, mount, and hang single or multiple lights together with these versatile rails. Made from extruded aluminum in silver or black. Available in 6", 12" and 18" lengths.