Sobo WP-850F Internal Aquarium Filter

The Sobo WP-850F is a compact internal filter that sits inside the aquarium and keeps water moving through its filter chamber, trapping debris and helping keep the tank clean and healthy. As the photo shows, it has a slotted intake cage, a power cable and an air tube that can draw air into the outflow for extra aeration. It suits small freshwater set-ups that need simple, everyday filtration.

Key features of the Sobo WP-850F Internal Aquarium Filter

• Compact internal filter
• Slotted intake cage
• Air tube for aeration
• Keeps water moving
• For small tanks

Setting it up

Position the filter fully submerged in a back corner, with the outlet angled along the glass so the current reaches every part of the tank. For the aeration feature to work, the open end of the air tube must sit above the waterline; close it off if the bubbles are too lively for gentle swimmers such as bettas. In a new set-up, run the filter for some time before adding fish so beneficial bacteria can build up.

Good to know

Unplug before maintenance, rinse the sponge in old tank water rather than tap water so the good bacteria survive, and never run the filter out of water.

Sobo WP-850F Internal Aquarium Filter specifications

• Brand: Sobo
• Product: Sobo WP-850F Internal Aquarium Filter
• Model: WP-850F
• Type: Internal (submersible) filter
• Category: Fish Filters & Media