Danner Proline 1000 Waterfall Biofilter with 50 Bioballs MPA-AQ-047 you can trick them into

you can trick them into leaving your fish alone

Heavy-duty as well as pliable

4 way socket includes a 7" long cord with a hard wire (Y) connection

as well as custom scheduling

Danner Proline 1000 Waterfall Biofilter with 50 Bioballs MPA-AQ-047 you can trick them intoThe Danner 1000 Pond and Waterfall Biofilter with Bioballs produces the beauty and soothing sounds of a waterfall, and its biological filtration boosts pond water clarity and quality. Besides trapping debris, the filter media provides a home for beneficial bacteria. Beneficial bacteria feed on the same nutrients that feed algae, and they outcompete algae, resulting in clear pond water. Under normal usage, this pond and waterfall filter box needs to be