Fluval SP sump pumps include various fittings that allow you to consider both options. For the average hobbyist, we usually recommend flexible hosing as it has greater noise-dampening properties and requires less use of elbows and other fittings that can diminish pump output performance. It is also easier to replace, if necessary.

A bubble trap located within the sump, after the output of your skimmer, can help prevent this issue – we recommend installing one. Otherwise, the pump inlet may be drawing air from the surface. If this is the case, we recommend installing an elbow of the same diameter as your pump inlet and directing it towards the bottom of the sump.

Adapters are readily available at various hardware stores and plumbing part retailers and will allow you to connect a Fluval SP sump pump to your aquarium system.