TUNZE® Quickphos is an adsorbing...

granulate on aluminium basis for fresh and salt water which safely removes phosphate, humic acid and organic contaminants. These contaminants are bound on the surface of Quickphos. The undesired growth of algae is reduced, permitting corals to develop their natural colours.
Suitable for two TUNZE® refill units 870 or one 1670. The content corresponds to about 800 g (28.2 oz.). Bonding capacity of 1,000 g (35.2 oz.) TUNZE® Quickpos: 8 g (.28 oz.) of phosphate (PO4) within a very short period of time.
Grain: 4 to 6 mm (.15 to .23 in.)