Fusion Flow Linear 330 - 330mm Sweep Reef Flow System

Carries the powerhead you already own along a rail above your tank, so the flow arrives from a moving point instead of firing from one fixed spot. The dead zone behind your rockwork stops being permanent.

Will the 330 fit?

Measure front to back across the display area, inside the glass. The 330 suits 440-540 mm.

It needs 410 mm clear across the tank opening, stands 77 mm above the rim, and requires 65 mm (minimum) behind the back glass — that last one is the drive end and the speed dial, so check the gap behind your tank as well.

Typically the right size for a Red Sea REEFER 250 or a Waterbox Marine X 90.3

Not sure? The measuring guide is on Will it fit.

The essentials

• 330 mm of sweep, speed set on a dial
• Uses the pump you already own — magnet carrier or mechanical cradle
• Clamps to the rim. No drilling, no adhesive, no cabinet modification
• Black or white, same price
• 12 V, no mains voltage anywhere in the unit
• Designed, built and tested in the UK
• Patent Pending — GB2619546.1

Running two? Add a second and £39 comes off automatically.

Full specification and the maintenance schedule are on How it works.

Built to order. Up to 4 weeks.

Every unit is made when you order it, so there's no stock to take from. Four weeks is the maximum, and most go sooner. I'll email you within two working days with the date I'm working to, and again when it ships.

Delivery is free, and it goes Royal Mail Special Delivery — signed for, and insured for the full value of the unit.