These beautifully designed, low energy pumps can be used with air stones and sponge filters.
A direct replacement for Continuum AquaBlade Scrapers. Designed just for acrylic aquariums, these blades are made of a self-lubricating plastic that is actually softer than acrylic but strong enough to remove stubborn coralline algae!
The POLY-FILTER is for filtering and purifying both fresh and salt water aquariums.