Fusion Flow Linear 230 - 230mm 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 230 fit?

Measure front to back across the display area, inside the glass. The 230 suits 340-440 mm.

It needs 310 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 an all-in-one type tank; please measure your display.

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

The essentials

• 230 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 £29 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.