Shark Pro 500 Internal Filter Boyd The balls are made of

The balls are made of resin

They also have an iridescent blue line that runs along their backs

juvenile and young fish reach their maximum potential

A diverse wood that boasts intricate shapes and colours ranging through shades of black and brown

thereby preventing the #1 cause of fish loss: "new tank syndrome

Shark Pro 500 Internal Filter Boyd The balls are made ofSicce's Shark Pro 500 Internal Filter is rated for tanks up to 37 gallons. It is a fantastic internal filter for smaller tanks that includes a magnetic mount, flow regulation and 3 types of flow options. These are uni directional flow, an integrated spray bar or an airline that allows for oxygenation from the uni directional flow outlet. You can add multiple modules to the filter through their 'magnet connecting system' that allows for more filtration