Sera Gravel Cleaner Edge -pohjalappo

An angular gravel cleaner with a bypass opening.

Why angular: straight edges reach where a round nozzle cannot – into corners and along the glass, exactly where sludge tends to gather. The cleaner suits every type of gravel and fine substrates as well. The hand-adjustable bypass opening lightens the suction, so even fine sand can be loosened and cleaned without disappearing up the hose. The bypass also keeps the bed from compacting.

Why the substrate needs vacuuming: the coarser the gravel, the more sludge collects in the gaps. Food disappears into the bed before it can be eaten, and animal waste and dead plant parts settle there without ever reaching the filter. A large amount of sludge is not just unsightly, it degrades water quality.

Gently, not down to bare gravel: useful bacteria grow in and on the substrate and are part of the tank's biology. The bed is therefore vacuumed gently rather than sterilised.

What is in the pack: 2 metres of transparent hose are included, so the cleaner is ready to use straight away. The clear hose is useful: you can see when the water runs clean and the job is done.